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Selo de garantia
Posted: 16:26 Thu 26 Jan 2012
by RAYC
I have been hunting the IDVP site to see if i could find something official on what the selo de garantia actually guarantees.
If anyone knows the official/authoritative source for what the guarantee means, i would be very grateful for a link!
Re: Selo de garantia
Posted: 16:51 Thu 26 Jan 2012
by Glenn E.
I think it only "guarantees" that the Port meets/follows the IVDP's regulations. It is most definitely not a quality guarantee.
Re: Selo de garantia
Posted: 17:49 Thu 26 Jan 2012
by RAYC
Glenn E. wrote:I think it only "guarantees" that the Port meets/follows the IVDP's regulations.
Which, for instance, is materially different from what Roy states that it guarantees:
And I have come across other statements elsewhere that seem to imply different meanings to the guarantee
Hence why i was looking for the official source/statement of what the guarantee actually does!
Re: Selo de garantia
Posted: 17:58 Thu 26 Jan 2012
by Glenn E.
RAYC wrote:Glenn E. wrote:I think it only "guarantees" that the Port meets/follows the IVDP's regulations.
Which, for instance, is materially different from what Roy states that it guarantees:
Not really - Roy's statement is a subset of mine. One of the IVDP's regulations is that Port must come from the demarcated Douro region in Portugal.
But... no, I don't have an official source or link to the actual regulation(s) other than just using the IVDP web site.
Re: Selo de garantia
Posted: 18:02 Thu 26 Jan 2012
by RAYC
Glenn E. wrote:RAYC wrote:Glenn E. wrote:I think it only "guarantees" that the Port meets/follows the IVDP's regulations.
Which, for instance, is materially different from what Roy states that it guarantees:
Not really - Roy's statement is a subset of mine. One of the IVDP's regulations is that Port must come from the demarcated Douro region in Portugal.
But... no, I don't have an official source or link to the actual regulation(s) other than just using the IVDP web site.
So...it is a guarantee that the contents of the bottle must come from the demarcated Douro region in Portugal, despite the fact that approx 16.5% of the contents do not actually come from there...?
Re: Selo de garantia
Posted: 18:16 Thu 26 Jan 2012
by DRT
I think Glenn's statement is correct. Trying to drill into the detail using paraphrasing of the individual regulations out of context rather that the regulations themselves is unlikely to be profitable.
If we take Glenn's definition:
Glenn E. wrote:it "guarantees" that the Port meets/follows the IVDP's regulations.
...and then acknowledge that in order to fall within that definition a wine must have been:
>> made using grapes of allowable varieties grown in the appropriate place
>> made using spirit that meets the regulations
>> treated and aged in accordance with one of the permitted styles
>> approved by the IVDP if necessary (depending on style)
>> labelled and described in accordance with the regulations governing the particular style
...then I think we have an understandable definition.
In the case of VP, I think it should actually be capable of being relied upon as a quality guarantee given that the wines must pass a quality test prior to being bottled and released for sale. Unfortunately, there is so much mystery around that process, and so many inexplicable anomalies, that no one could actually rely on such a guarantee unless the quality benchmark was exceedingly low.
Re: Selo de garantia
Posted: 18:34 Thu 26 Jan 2012
by RAYC
Yes - you are drawing some of the reasons i asked this question.
I do agree that Glen's summary is the most plausible of the ones i have read - i just could not find a direct statement on the IDVP website about it so wondered whether there was one.
In particular because it does seem to be a murky concept - in a lot of places, the assumption given is that the guarantee means that the Port is exlusively from the Douro region (eg: even on the IDVP-sponsored
Center for Wine Origins site). And because of the aguardente, i do not believe that anyone could say that this is strictly correct.
Likewise, although there are many statements that it is not a guarantee of quality, as you say some of the IDVP regulations impose a quality test. So for some styles (eg: VP) it is a guarantee that the wine has been approved by the IDVP as meeting a certain quality...but not a guarantee of quality per se...!
Hence the desire to go to source rather than speculation!
Re: Selo de garantia
Posted: 18:43 Thu 26 Jan 2012
by DRT
If you read the introduction to Roy's article on the subject you will quickly realise that there is no official definition of what the selo actually means.
This is an unfortunate, but typical, useless attribute of the governance of the port trade.
Re: Selo de garantia
Posted: 18:51 Thu 26 Jan 2012
by DRT
As for the aguardente question, my view is that this is a non-issue. At no time in history has it been the case that the aguardente used to fortify the wines of the Douro region have had to come from within the region. In fact, according to a number of producers I have spoken to, it is apparently not viable to do so on a commercial basis. Port has always been fortified with spirit from other regions/countries and I think most people who know anything about Port and how it is made will know that. If the IVDP had a regulation which said that 100% of the contents of Port wine had to come from within the demarcated region then there would be an issue. But the regulations don't say that, so I don't think there is an issue. The issue that you are highlighting is an issue of inappropriate and confusing paraphrasing of the regulations. Unfortunately, the Regulator is contributing to the confusion

Re: Selo de garantia
Posted: 19:17 Thu 26 Jan 2012
by RAYC
DRT wrote:there is no official definition of what the selo actually means.
ok - this is interesting and i had not appreciated the fact - thanks! This is all i was really trying to confirm on this thread
DRT wrote:As for the aguardente question, my view is that this is a non-issue....If the IVDP had a regulation which said that 100% of the contents of Port wine had to come from within the demarcated region then there would be an issue. But the regulations don't say that, so I don't think there is an issue. The issue that you are highlighting is an issue of inappropriate and confusing paraphrasing of the regulations. Unfortunately, the Regulator is contributing to the confusion

Sorry - i never meant to give the impression that the use of non-Douro aguardente was an issue in terms of the regulations - it is quite clearly not (and my comments should not be interpreted as such).
But on the marketing side, i do see that there's a slight conundrum if the wine is presented as being 100% from the Douro region. Or, for instance, made exclusively from grapes from a single vineyard or even from a single harvest. Not one that bothers me, of course, but one that piqued my interest on a slow work day!
The aguardente conundrum does also lead to all sorts of other marketing-related questions - for instance, do IDVP approve a special batch of organic-certified aguardente to use in organic ports?!
Re: Selo de garantia
Posted: 19:21 Thu 26 Jan 2012
by DRT
RAYC wrote:one that piqued my interest on a slow work day!
Another thread did make me think that you were not entirely stretched by your employer today

Re: Selo de garantia
Posted: 19:29 Thu 26 Jan 2012
by RAYC
DRT wrote:RAYC wrote:one that piqued my interest on a slow work day!
Another thread did make me think that you were not entirely stretched by your employer today

Yes - if only i had brought the backlog of TNs in with me...

Re: Selo de garantia
Posted: 21:59 Thu 26 Jan 2012
by Glenn E.
DRT wrote:As for the aguardente question, my view is that this is a non-issue. At no time in history has it been the case that the aguardente used to fortify the wines of the Douro region have had to come from within the region.
In fact I think that the original requirement was that it NOT come from the Douro region. This was put in as a bit of appeasement to the growers whose vineyards were outside of the newly minted region and who were suddenly being excluded from making a product that they were used to making.
Re: Selo de garantia
Posted: 22:04 Thu 26 Jan 2012
by Glenn E.
RAYC wrote:But on the marketing side, i do see that there's a slight conundrum if the wine is presented as being 100% from the Douro region.
Port has other problems along those lines, the most blatant being that "10 Year Old Tawny Port" is not 10 years old, nor is it at least 10 years old, nor does it even average 10 years old. A 10 Year Old Tawny Port has merely been judged to meet the IVDP's profile of what a 10-yr old tawny Port should taste like.
Granted, most if not all are at least 10 years old on average, but to meet US law it's supposed to be a requirement. (In fact I think that the contents must be 100% at least 10 years old, not just an average, but I wouldn't swear to that.) I'm not quite sure how the Port industry manages to get the labeling of tawnies with an indication of age through US customs law.
Re: Selo de garantia
Posted: 15:00 Fri 27 Jan 2012
by Andy Velebil
In the old days, a producer had to buy their aguardente from the (then called) IVP. Not the best of ideas as the aguardente scandal of the early 1970's can attest to

A producer can now buy aguardente from whatever supplier he/she want to, so long as it conforms to IVDP rules. Whatever aguardente you use, it has to be approved by the IVDP. Anyone who's been to the Douro will notice the tanks holding the aguardente are sealed by the IVDP.
DRT is correct, it is not viable from a cost perspective to make aguardente in the Douro. The sole processing plant near Naples is now closed and out of business.
Re: Selo de garantia
Posted: 12:41 Sat 28 Jan 2012
by JacobH
Andy Velebil wrote:In the old days, a producer had to buy their aguardente from the (then called) IVP. Not the best of ideas as the aguardente scandal of the early 1970's can attest to

A producer can now buy aguardente from whatever supplier he/she want to, so long as it conforms to IVDP rules. Whatever aguardente you use, it has to be approved by the IVDP. Anyone who's been to the Douro will notice the tanks holding the aguardente are sealed by the IVDP.
Do you have a photo of the tanks? I haven’t noticed them (though I guess I haven’t been looking) and have been wondering what they look like!
It must be a good thing that more effort is being put into the aguardente these days considering what a large component of the wine it makes up. Though I’d be interested in finding out how many shippers do proper tasting and experiments. I remember Oscar Quevedo saying that they do blind tasting of just the aguaradente (mixed with water!) but I wonder if any others have library blends where the same must has been fortified with different aguardente to see what effect it has on the flavour over time?
Andy Velebil wrote:DRT is correct, it is not viable from a cost perspective to make aguardente in the Douro. The sole processing plant near Naples is now closed and out of business.
Does that mean no-one is producing a Douro aguardente for drinking purposes? Although I’ve never tried it, I’ve seen that for sale a few times and I think Niepoort used to sell it commercially.
Glenn E. wrote:RAYC wrote:But on the marketing side, i do see that there's a slight conundrum if the wine is presented as being 100% from the Douro region.
Granted, most if not all are at least 10 years old on average, but to meet US law it's supposed to be a requirement. (In fact I think that the contents must be 100% at least 10 years old, not just an average, but I wouldn't swear to that.) I'm not quite sure how the Port industry manages to get the labeling of tawnies with an indication of age through US customs law.
It’s particularly odd considering that 40-year-olds are sold as ‟At least 40 years old” everywhere except the States, apparently to comply with American labelling laws! It’s a bit like saying New Zealand Pinot Noir can be sold as ‟Beaujolais” but not ‟Burgundy”...
Re: Selo de garantia
Posted: 15:41 Mon 30 Jan 2012
by g-man
If I were a wine maker, I 'd personally not even bother with Aguarmente for some of my non VP lines.
It adds a bit of inconsistentcy and wasted time in having to wait for a harvest, maturation and storing.
I personally would just contact my local Dupont and ask if they could ship me xxx tons of pure ethanol and cut it with water as I see fit.
certainly much cheaper considering that none of my tawnies or rubies have a selo.
I do like the fact though, that the selo can help the producer track down if a bottle is legit or not.
Re: Selo de garantia
Posted: 15:45 Mon 30 Jan 2012
by DRT
g-man wrote:none of my tawnies or rubies have a selo.
Are these new bottles? If so, they should definitely have a selo otherwise they are possibly fake.
...and it is not permissable to fortify Port with anything other than distilled grape spirit - i.e. aguardente. The producers don't have the choice to use any other form of spirit.
Re: Selo de garantia
Posted: 16:10 Mon 30 Jan 2012
by Andy Velebil
Jacob,
To here are some replies...
Do you have a photo of the tanks? I haven’t noticed them (though I guess I haven’t been looking) and have been wondering what they look like!
I checked my pics and I don't see one. Sorry.
It must be a good thing that more effort is being put into the aguardente these days considering what a large component of the wine it makes up. Though I’d be interested in finding out how many shippers do proper tasting and experiments.
All the producers I've spoken to test or evaluate the Aguardente they use in some way.
Does that mean no-one is producing a Douro aguardente for drinking purposes? Although I’ve never tried it, I’ve seen that for sale a few times and I think Niepoort used to sell it commercially.
I was told last October that there is no aguadente being produced in the Douro anymore, as the sole remaining processing plant west of Quinta d. Napoles closed. I was told it isn't cost effective to do it in the Douro. From a historical perspective, many producers made their own from small stills on the Quinta. IIRC, you can still see the original stills used by Vista Allegre and Quinta da Gaivosa, which they have on display.
I was told that it is illegal to make your own aguardente now days. Of course, I don't know if that only applies to using said home-distilled aguardente to fortify Port or is illegal in general overall. I will have to check on that.
Re: Selo de garantia
Posted: 16:25 Mon 30 Jan 2012
by g-man
DRT wrote:g-man wrote:none of my tawnies or rubies have a selo.
Are these new bottles? If so, they should definitely have a selo otherwise they are possibly fake.
...and it is not permissable to fortify Port with anything other than distilled grape spirit - i.e. aguardente. The producers don't have the choice to use any other form of spirit.
We can call it whatever we want, but it's really all ethanol, rather dated rule considering they don't even make the stuff within the country.
It might have been my poor recolection as I may have thrown them out of the 6 standing bottles I have open

Re: Selo de garantia
Posted: 22:20 Tue 31 Jan 2012
by Roy Hersh
We can call it whatever we want, but it's really all ethanol, rather dated rule considering they don't even make the stuff within the country.
False.
Fact: there is aguardente produced in Portugal.
I have tasted nicely aged aguardente made in the South of Portugal while in Santarem last May, as well as 80 and 100 year old bottles of aguardente that were produced in the Douro, (tasted after dinner at Aquapura in the Douro) fantastic drinks that reminded me of the finest sipping Tequilas. I have also seen but not tasted, single vintage aguardente produced up in the Vinho Verde region at one of the properties I've visited there.
To clarify some points from above:
a. Aguardente does have to be approved by the IVDP before being used in the production of Port
b. Most aguardente today comes from the southern regions of Spain and France.
c. Not long ago, after some rules were changed under the IVP, a trade-based consortium was set up to collaboratively procure high quality well-priced aguardente. This was successful for a number of years but sadly the effort imploded (and I'll say no more about that. : )
d. There have been times in history where the aguardente for Port HAD TO BE purchased directly from Portuguese governmental through their appointed representatives.
e. The guarantees prescribed by the Selo da Garantia is loosely defined, and I don't believe my article says anything different than that.
f. The seven person tasting panel tastes all Port to check for organoleptic typicity and must pass tests of smell, coloration (chromatography is used), and taste.
g. Douro wine even with DOC on the label, can be produced without a Selo. Port can not.
Re: Selo de garantia
Posted: 22:36 Tue 31 Jan 2012
by g-man
Just to be sure,
are you implying Roy, that the aguarmente utilized would be noticeable in something like a tawny that see's so much wood time anyway?
Would it not be better for the customer and the producer if they are able to source one component of their drink for cheaper esp if the producer passes the savings onto the customer?
Imagine a tyalor 20 year tawny that goes for 30$ instead of 40$.
that would be good in my opinion
Re: Selo de garantia
Posted: 22:50 Tue 31 Jan 2012
by Roy Hersh
are you implying Roy, that the aguarmente utilized would be noticeable in something like a tawny that see's so much wood time anyway?
I am sorry, I don't see how you can draw the conclusion from anything in my last post that I was
implying that whatsoever.
But for the record, the difference between a high quality aguardente and cheap/poorly made aguardente can absolutely be tasted in ANY kind of Port, but that doesn't mean it necessarily will be ... just that the type of Port has no bearing on its ability to be perceived. When a Port gives off a spirituous aroma or tastes very warm or hot ... it MAY be due to crappy aguardente. The opposite is true of a seamless and smooth Port which is made better by high quality aguardente. To see the difference go into a Gaia tasting room and taste different batches. I've done this several times (permitted by producers) and it is very telling.
Would it not be better for the customer and the producer if they are able to source one component of their drink for cheaper esp if the producer passes the savings onto the customer?
Yes, but cheaper is not typically better when it comes to aguardente. The price differential is not that dramatic when figuring in the 4:1 ratio used for fortification. So savings may be of consequence to the producer but won't translate to much $avings by the time the finished product reaches the consumer level.
Imagine a tyalor 20 year tawny that goes for 30$ instead of 40$.
Yes, that is a nice fantasy. The savings realized by any scheme to purchase aguardente is not going to make anywhere near that type of difference. I realize if one has not been involved in the economics of Port, close up, that they may just misconstrue the realities of how things work on a tangible level, vs. what "seems to make sense." Please know this is NOT said, trying to be condescending, but in clarification of the above noted prices you mentioned.
Yes, it would be very nice to be able to go back to the prices I paid in the late 1980's and early 1990's too.

Re: Selo de garantia
Posted: 02:32 Wed 01 Feb 2012
by Andy Velebil
Roy Hersh wrote:
Would it not be better for the customer and the producer if they are able to source one component of their drink for cheaper esp if the producer passes the savings onto the customer?
Yes, but cheaper is not typically better when it comes to aguardente. The price differential is not that dramatic when figuring in the 4:1 ratio used for fortification. So savings may be of consequence to the producer but won't translate to much $avings by the time the finished product reaches the consumer level.
If I'm reading this right, you're saying the price differences of cheap versus top quality aguardente isn't enough to warrant a price differential at retail? Because that is in stark contrast to what many producers have told me. A good case in point is why Croft Pink was and is so expensive. After trials they ended up having to use the same top quality aguardente they use for their VP, which drove the costs up both at wholesale and then of course at retail level.
Re: Selo de garantia
Posted: 02:38 Wed 01 Feb 2012
by g-man
Roy Hersh wrote:are you implying Roy, that the aguarmente utilized would be noticeable in something like a tawny that see's so much wood time anyway?
I am sorry, I don't see how you can draw the conclusion from anything in my last post that I was
implying that whatsoever.
But for the record, the difference between a high quality aguardente and cheap/poorly made aguardente can absolutely be tasted in ANY kind of Port, but that doesn't mean it necessarily will be ... just that the type of Port has no bearing on its ability to be perceived. When a Port gives off a spirituous aroma or tastes very warm or hot ... it MAY be due to crappy aguardente. The opposite is true of a seamless and smooth Port which is made better by high quality aguardente. To see the difference go into a Gaia tasting room and taste different batches. I've done this several times (permitted by producers) and it is very telling.
I'd have to throw the BS flag on this one. While I don't question your tasting skills, but I'd be very surprised that if ethanol is cut properly with water and sugars and then aged in wood for >10 years, anyone would be very very hard pressed to taste the difference.
Now if you took adulterated alcohol that someone already has inserted XXX into it, fine I don't know what the original Aguardente would have tasted like so wouldn't be able to make that judgment and it might POSSIBLY affect the taste on a young batch of wines. But again, if it were a 10 yr tawny, I'd still be very suspicious of anyone claiming the ability to differentiate between a "high quality" aguardente vs a "low quality" one vs pure ethanol that's cut to match the ABV.
Re: Selo de garantia
Posted: 02:42 Wed 01 Feb 2012
by g-man
Andy Velebil wrote:Roy Hersh wrote:
Would it not be better for the customer and the producer if they are able to source one component of their drink for cheaper esp if the producer passes the savings onto the customer?
Yes, but cheaper is not typically better when it comes to aguardente. The price differential is not that dramatic when figuring in the 4:1 ratio used for fortification. So savings may be of consequence to the producer but won't translate to much $avings by the time the finished product reaches the consumer level.
If I'm reading this right, you're saying the price differences of cheap versus top quality aguardente isn't enough to warrant a price differential at retail? Because that is in stark contrast to what many producers have told me. A good case in point is why Croft Pink was and is so expensive. After trials they ended up having to use the same top quality aguardente they use for their VP, which drove the costs up both at wholesale and then of course at retail level.
now "young" wines like the croft pink that's not meant to be aged and consumed rather soon, I can 100% see that a high quality aguardente will indeed affect the taste of the wine.
Re: Selo de garantia
Posted: 17:02 Wed 01 Feb 2012
by Glenn E.
g-man wrote:I'd have to throw the BS flag on this one. While I don't question your tasting skills, but I'd be very surprised that if ethanol is cut properly with water and sugars and then aged in wood for >10 years, anyone would be very very hard pressed to taste the difference.
You're talking about pure ethanol cut with (presumably) distilled water.
Roy is talking about aguardente.
Two very different things. Aguardente is only 77% ethanol. (Haha... "only." 77% alcohol will burn steadily and brightly at room temperature.) The other 23% contains impurities no matter how high quality the aguardente is. Those impurities are what gives it flavor, or in the case of Port are what affect the Port.
The taste of aguardente will mellow with age as does the taste of Port, but the effect is still there. I would expect to be able to taste the difference between a 20-yr old Tawny made with high quality aguardente and one made with low quality aguardente just as I would expect to be able to taste the difference between ones made with high quality grapes and low quality grapes.
Re: Selo de garantia
Posted: 18:44 Wed 01 Feb 2012
by Cynthia J
The IVDP does have a loose informal explanation of what makes a Port a true port - which roughly equates to what RAYC was asking to begin with - the selo gurantees what exactly?
http://www.ivdp.pt/pagina.asp?idioma=1& ... dSeccao=6& That link takes you to the IVDP fraud gallery (english version!) which basically says the other wines are frauds because:
- Only fortified wines produced in the Douro Demarcated Region, that conform to the physical-chemical and organoleptical characteristics laid out by the IVDP, can be called Port wine;
- Only those who are registered with the IVDP and have the capacity to do so, can produce and sell Port wine;
- The labels must be approved by the IVDP;
- The bottle must bear the seal of guarantee.
Only after sample Ports are tested and approved will the IVDP issue the selos to be used for bottling. So, the selo guarantees that the wine meets items 1-3 in the list above. And the IVDP does conduct random samplings on bottles bought off retail shelves to make sure what ended up in the bottle really is what they issued the selo for!
Regarding aguardente, on the IVDP site go to
http://www.ivdp.pt/pagina.asp?codPag=48 ... 6&idioma=1 and the third item down is the legislation regarding aguardente - click link to open PDF in portuguese only. Skimming quickly, it requires that aguardente destined for use in Moscatel do Douro or Vinho do Porto must be tested and approved by the IVDP and sets out some strict requirements about collecting and reviewing samples, the registration of the producer, the handling and tracking in transit, and more.
DRT wrote: In the case of VP, I think it should actually be capable of being relied upon as a quality guarantee given that the wines must pass a quality test prior to being bottled and released for sale. Unfortunately, there is so much mystery around that process, and so many inexplicable anomalies, that no one could actually rely on such a guarantee unless the quality benchmark was exceedingly low.
Actually, I think the problem isn't low benchmarks, it's that the IVDP approves a cask sample before the wine goes for bottling. Think about the possibilities for compromise of quality in the bottling process if the producer is - god forbid!! - sloppy about transport, hygiene, cork quality, you name it...
Re: Selo de garantia
Posted: 19:21 Wed 01 Feb 2012
by RAYC
That really is a VERY loose and informal definition!
The IVDP fraud gallery goes on to state:
IVDP wrote:Be careful:
- Verify if the bottle contains the appellation of origin Port (or its translations);
- Verify if the bottle contains the guarantee seal issued by IVDP (this seal has security elements);
- Verify it the label contains the indication ‟Produced in Portugal”.
- Note: all of these elements are compulsory and, therefore, must be on the labelling of the Port wine bottles
Now, if all of those elements are compulsory, does this mean that English-bottled ports (which have no selo) or Oporto-bottled ports that were shipped prior to foundation of the IVDP (and so have the IVP selo...or nothing if you go back far enough) are not really Port...?!
Cynthia J wrote:Regarding aguardente, on the IVDP site go to
http://www.ivdp.pt/pagina.asp?codPag=48 ... 6&idioma=1 and the third item down is the legislation regarding aguardente - click link to open PDF in portuguese only. Skimming quickly, it requires that aguardente destined for use in Moscatel do Douro or Vinho do Porto must be tested and approved by the IVDP and sets out some strict requirements about collecting and reviewing samples, the registration of the producer, the handling and tracking in transit, and more.
Is there anything there that indicates that the aguardente must be produced from grapes of the same harvest as the grapes from the Douro which produce the grape must? Or could Vintage Ports actually be "non-vintage" (technically/strictly speaking), in the sense of being composed from grapes of various vintages?
Re: Selo de garantia
Posted: 19:25 Wed 01 Feb 2012
by g-man
Glenn E. wrote:g-man wrote:I'd have to throw the BS flag on this one. While I don't question your tasting skills, but I'd be very surprised that if ethanol is cut properly with water and sugars and then aged in wood for >10 years, anyone would be very very hard pressed to taste the difference.
You're talking about pure ethanol cut with (presumably) distilled water.
Roy is talking about aguardente.
Two very different things. Aguardente is only 77% ethanol. (Haha... "only." 77% alcohol will burn steadily and brightly at room temperature.) The other 23% contains impurities no matter how high quality the aguardente is. Those impurities are what gives it flavor, or in the case of Port are what affect the Port.
The taste of aguardente will mellow with age as does the taste of Port, but the effect is still there. I would expect to be able to taste the difference between a 20-yr old Tawny made with high quality aguardente and one made with low quality aguardente just as I would expect to be able to taste the difference between ones made with high quality grapes and low quality grapes.
unless yer talking about hooch, I dont think aguardente is anywhere near 77% alcohol. I'd say 30-40% ABV is probably what I'd expect to see.
The impurities add an imprecise, uncontrolled flavor to something that's suppose to be consistent like a tawny.
I'm saying that you would probably taste the difference in high and low quality aguardente due to the impurities.
However if you took a high quality one and had a controlled test with pure ethanol that is cut with water, after you've made the port and stuck it in barrel for 10 + years, I'd have to say that I seriously doubt anyone who tells me that the one made with ethanol would adversely affect the taste quality of the tawny.
Re: Selo de garantia
Posted: 19:48 Wed 01 Feb 2012
by Glenn E.
g-man wrote:However if you took a high quality one and had a controlled test with pure ethanol that is cut with water, after you've made the port and stuck it in barrel for 10 + years, I'd have to say that I seriously doubt anyone who tells me that the one made with ethanol would adversely affect the taste quality of the tawny.
In that specific case, then yeah there's probably not a lot of difference. A high quality aguardente is going to be as neutral as they can make it.
And before Cynthia beats me to it...
the Aguardente used for Port is 77% alcohol.
Aguardente made for drinking has much lower ABV - in the 30% range as you guessed.
Re: Selo de garantia
Posted: 20:04 Wed 01 Feb 2012
by g-man
Glenn E. wrote:g-man wrote:However if you took a high quality one and had a controlled test with pure ethanol that is cut with water, after you've made the port and stuck it in barrel for 10 + years, I'd have to say that I seriously doubt anyone who tells me that the one made with ethanol would adversely affect the taste quality of the tawny.
In that specific case, then yeah there's probably not a lot of difference. A high quality aguardente is going to be as neutral as they can make it.
And before Cynthia beats me to it...
the Aguardente used for Port is 77% alcohol.
Aguardente made for drinking has much lower ABV - in the 30% range as you guessed.
heh wordpress is denied at work =)
But industrial pure ethanol is surely cheaper/faster/more readily available then aguardente
Would it not be a good idea if a port producer can utilize it in their tawnies if they're willing to pass the savings onto the customers?
tho i guess iw as pwi so i retract, you probably can taste a crappy aguardente vs a good one. but i'm sticking to my guns about high quality aguardente vs industrial grade ethanol.
Re: Selo de garantia
Posted: 23:25 Wed 01 Feb 2012
by Andy Velebil
g-man wrote:
However if you took a high quality one and had a controlled test with pure ethanol that is cut with water, after you've made the port and stuck it in barrel for 10 + years, I'd have to say that I seriously doubt anyone who tells me that the one made with ethanol would adversely affect the taste quality of the tawny.
You obviously have never had a 1972 Offley VP, made with industrial alcohol. Has to be the worst, and I mean worst, VP I've ever had. It was like drinking rubbing alcohol mixed with old grape juice. Roy, Glenn, Stewart, and I all had it at the same time and it was horrible.
Re: Selo de garantia
Posted: 00:17 Thu 02 Feb 2012
by g-man
Andy Velebil wrote:g-man wrote:
However if you took a high quality one and had a controlled test with pure ethanol that is cut with water, after you've made the port and stuck it in barrel for 10 + years, I'd have to say that I seriously doubt anyone who tells me that the one made with ethanol would adversely affect the taste quality of the tawny.
You obviously have never had a 1972 Offley VP, made with industrial alcohol. Has to be the worst, and I mean worst, VP I've ever had. It was like drinking rubbing alcohol mixed with old grape juice. Roy, Glenn, Stewart, and I all had it at the same time and it was horrible.
correct, which is why i distinctly said tawnies.
(I've been guilty of some home made hooch)
Re: Selo de garantia
Posted: 01:48 Thu 02 Feb 2012
by Glenn E.
You also said pure ethanol, which isn't the same as industrial ethanol.
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Re: Selo de garantia
Posted: 01:52 Thu 02 Feb 2012
by RAYC
Andy Velebil wrote:g-man wrote:
However if you took a high quality one and had a controlled test with pure ethanol that is cut with water, after you've made the port and stuck it in barrel for 10 + years, I'd have to say that I seriously doubt anyone who tells me that the one made with ethanol would adversely affect the taste quality of the tawny.
You obviously have never had a 1972 Offley VP, made with industrial alcohol. Has to be the worst, and I mean worst, VP I've ever had. It was like drinking rubbing alcohol mixed with old grape juice. Roy, Glenn, Stewart, and I all had it at the same time and it was horrible.
Although the
Dow 72 - also supposedly made with industrial alcohol (in fact, was this in the days where it had to be purchase from the IVP?) - was actually very pleasant and showed no ill effects. So perhaps it was just a badly-made Offley.
Re: Selo de garantia
Posted: 02:21 Thu 02 Feb 2012
by g-man
Glenn E. wrote:You also said pure ethanol, which isn't the same as industrial ethanol.
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u can buy multiple grades of industry ethanol

Re: Selo de garantia
Posted: 09:37 Thu 02 Feb 2012
by Cynthia J
I am really beginning to believe G-man is a major shareholder in a firm that produces ethanol...
RAYC wrote:Is there anything there that indicates that the aguardente must be produced from grapes of the same harvest as the grapes from the Douro which produce the grape must? Or could Vintage Ports actually be "non-vintage" (technically/strictly speaking), in the sense of being composed from grapes of various vintages?
It's late ... you're over thinking! (Or am I missing the teasing wind-up note here?) Yes, I suppose you could argue what's in the bottle it's not purely that XXXX vintage since the aguardente has to have been made at some previous time in order to be available for use during XXXX vintage. On the other hand, the sugar used for chaptalisation of all kinds of wines comes from sugar beets or cane... so is the stuff in that bottle not really wine, since it's got non-grape-derived material in there? (oh gawd I just opened a can of worms, didn't I?)
The regulation defines «Aguardente vÃnica»
o produto resultante da destilação de vinho e que corresponda à s caracterÃsticas estabelecidas neste regulamento
I dont know where ethanol comes from, but if it ain't grapes, it would be outlawed for use in Port right there...
Re: Selo de garantia
Posted: 09:59 Thu 02 Feb 2012
by RAYC
Cynthia J wrote:
It's late ... you're over thinking! (Or am I missing the teasing wind-up note here?) Yes, I suppose you could argue what's in the bottle it's not purely that XXXX vintage since the aguardente has to have been made at some previous time in order to be available for use during XXXX vintage. On the other hand, the sugar used for chaptalisation of all kinds of wines comes from sugar beets or cane... so is the stuff in that bottle not really wine, since it's got non-grape-derived material in there? (oh gawd I just opened a can of worms, didn't I?)
No - i had never really thought about it before - and until now my definition of a "vintage port" would usually include the sentence "produced from the grapes of a single harvest", or some variation of that, which i suppose i should really re-consider when explaining to people who do not know much about Port.
You are right - chaptalisation (had to google it!) is permitted in some regions (though no longer by the use lead aecetate i suppose!

), though this just "feels" to me like it should be regarded in the same way as the addition of yeast to start the fermentation process. But apparently the the dosage of champagne with "liqueur d'expédition" immediately after disgorging is common practice, and i suppose is a similar type of principle. I guess it is the sheer quantity of aguardente in the process that made me step back.
Anyway - i am happy with the idea that you can "overlook" the aguardente - by the same logic i can pretend that the Port is only actually 8% ABV and justify drinking so much more!

Re: Selo de garantia
Posted: 10:27 Thu 02 Feb 2012
by PhilW
Cynthia J wrote:so is the stuff in that bottle not really wine, since it's got non-grape-derived material in there? (oh gawd I just opened a can of worms, didn't I?)
I hope not - I've only just got used to the idea of the occaisonal decomposing insect/vermin or horseshoe ('for luck') in 'traditional' scrumpy cider, but worms in my port?! arrrrgh! (interesting thread/discussion to read btw)
Re: Selo de garantia
Posted: 17:20 Thu 02 Feb 2012
by g-man
PhilW wrote:Cynthia J wrote:so is the stuff in that bottle not really wine, since it's got non-grape-derived material in there? (oh gawd I just opened a can of worms, didn't I?)
I hope not - I've only just got used to the idea of the occaisonal decomposing insect/vermin or horseshoe ('for luck') in 'traditional' scrumpy cider, but worms in my port?! arrrrgh! (interesting thread/discussion to read btw)
well if they ran out of aguardente and used tequila instead you might end up with a few worms
There are some "traditions" within the wine making world I find rather silly.
It's okay to add refined sugars, acetic acid, sodium bisulfite, sulfur dioxide, genetically engineered specialty yeast to the wine yet force someone to utilize a rather non consistent expensive form of blending alcohol whose main purpose is to fortify a certain wine.
Cynthia, ethanol is alot of fun

Re: Selo de garantia
Posted: 18:33 Thu 02 Feb 2012
by Glenn E.
I can rationalize the "grapes" being only those used for the "wine" part of the Port. As long as those are from a single vintage, it's a Vintage Port.
The other stuff, including the aguardente, are "additives" and those don't have to abide by the same rules as the "grapes" do. Even though in this case, the aguardente must be made from grapes in order to be legal, those grapes aren't "grapes" in the same sense.
I think I need a glass of Port.

Re: Selo de garantia
Posted: 08:51 Fri 03 Feb 2012
by Cynthia J
RAYC wrote: Anyway - i am happy with the idea that you can "overlook" the aguardente - by the same logic i can pretend that the Port is only actually 8% ABV and justify drinking so much more!

Actually my logic is to take in a sufficient quantity of chocolate or cheese (or bangers and mash!) that the alcohol content is effectively reduced in my system...
Re: Selo de garantia
Posted: 10:52 Sat 04 Feb 2012
by uncle tom
Anyway - i am happy with the idea that you can "overlook" the aguardente - by the same logic i can pretend that the Port is only actually 8% ABV and justify drinking so much more!
Actually my logic is to take in a sufficient quantity of chocolate or cheese (or bangers and mash!) that the alcohol content is effectively reduced in my system...
My logic is to regard alcohol as a foodstuff and not worry about it..
..for the last three decades the bulk of my carbohydrate intake has been ethanol...

Re: Selo de garantia
Posted: 16:32 Sat 04 Feb 2012
by Andy Velebil
uncle tom wrote:
My logic is to regard alcohol as a foodstuff and not worry about it..
..for the last three decades the bulk of my carbohydrate intake has been ethanol...

Are these considered simple or complex Carbohydrate's? Or does it depend based on how simple or complex the Port is?

Re: Selo de garantia
Posted: 17:51 Sat 04 Feb 2012
by RAYC
Andy Velebil wrote:uncle tom wrote:
My logic is to regard alcohol as a foodstuff and not worry about it..
..for the last three decades the bulk of my carbohydrate intake has been ethanol...

Are these considered simple or complex Carbohydrate's? Or does it depend based on how simple or complex the Port is?

You joke...I remain convinced that the right amount of alcohol the night before heavy aerobic exercise acts as a very effective lactate buffer.
Re: Selo de garantia
Posted: 17:58 Sat 04 Feb 2012
by DRT
RAYC wrote:Andy Velebil wrote:uncle tom wrote:
My logic is to regard alcohol as a foodstuff and not worry about it..
..for the last three decades the bulk of my carbohydrate intake has been ethanol...

Are these considered simple or complex Carbohydrate's? Or does it depend based on how simple or complex the Port is?

You joke...I remain convinced that the right amount of alcohol the night before heavy aerobic exercise acts as a very effective lactate buffer.
I think I must be finding it difficult to judge what is "the right amount"
