Initial Draft re Storage Temps for FAQ

Sep 26, 2006 8 Replies

General ideas re storage: Ideal storage conditions for wine are cool, dark, moist, and vibration-free. Very dry air can compromise corks. Light and vibration are lesser evils, but still to be avoided. But the primary enemy of wine is heat.



Constant temperatures of below 48F/9C (i.e. Glamis Castle) will age wines at a glacial rate. It's unlikely that any backward wine would be ready in the original owner's lifetime.



Constant temperatures of 52F/11C will age wines very slowly but evenly.



Constant temperatures of 55F/13C will age wines evenly. This has become the de facto standard for most wine storage facilities and coolers.



Constant temperatures of 60F/15C will age wines faster, but reasonably harmoniously.



Constant temperatures of 65F/18C will age wines quickly, possibly with noticable loss of balance.



Constant temperatures of 70F/21C will age wines very quickly. Many reds will start to lose fruit well before tannins integrate. This temperature is probably fine for a few months, but dangerous for long term storage.



Constant temperatures of 75F/24C or above will lead to tired over-the-hill wines very quickly.



It is unlikely that exposure to temperatures of 75F/24C for a day or two would lead to any lasting damage. Once temperatures range over



80F/27C there is always the chance of a pressure change leading to cork failure and even if cork is sound, wines may exhibit signs of being cooked. This does NOT mean that taking a wine home in an unairconditioned car dooms it- it takes a while to shift bottle temperature.

Many traditional passive cellars fluctuate seasonally- as long as swings are seasonal and not daily, this seems fine. Some argue that a wine that is in a passive cellar with a range of say 50F/10C in winter to 65F/18C in summer develop even more harmoniously than those in a constant 55F/13C controlled unit. But daily swings will probably compromise corks, and even if it doesn't will adversely affected the wine.



If one suspects that storage conditions are suspect, probably better to drink as soon as possible. For more information of temperature and aging, see this page:

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"DaleW" skrev i melding news: snipped-for-privacy@i3g2000cwc.googlegroups.com...

I believe that Glamis Castle had constant 5C - Michael P surely knows and may comment on your list. Anders

From the end of:

I don't know what kind of microwave he has, but I got a low powered microwave many years ago at a tag sale, and have found that 8-10 seconds (on high) is just about right. If I put it on for twenty seconds, I'll have wine tea.

Of course it depends on the amount (I presume one glass) and the setting (I use high), but be careful out there! :)

Jose

That article is actually dated 1996, when men were manly, and microwaves were mostly 600-800 watts. :)

I got my microwave before that, and it was a tag sale item at -that- time. :)

Jose

Sorry, no. Delved deep into Michael Broadbent's books recently, but didn't find any indication of the actual temperature of Glamis Castle cellars.

But, as a matter of fact, the priciples of thermodynamics have it that the cellars of Glamis Castle simply cannot be colder than the yearly average temperature of its location.

This gives an average temperature (and the temperature of deep cellars) of 10°C = 50°F for Champagne and also for my location (Vienna).

Don't know about average yearly temperatures in Scotland - which might also be depending on the level above sea - but I would wonder if it was much colder than 8 or 9°C.

Of course, if you delve into such a cellar coming from an outside summer day at 30°C, it feels glacial, and humidity makes it feel even colder.

HTH a little,

M.

Serena Sutcliffe told me she bought some extremely well-preserved pre-WW2 clarets at auction in the 1950s that came from the very cool cellars of the Swedish monopoly.

I don't know where these cellars are located, but they have probably the same temperature as Glamis Castle.

M.

I remember reading somewhere that a visitor to Glamis Castle talked the staff into letting him measure the temperature in the cellar where the wine had been kept. I do not remember if I read this in a book, a magazine, or a newsletter, and unfortunately I do not recall the exact results other than the temperature was quite low. If I can find this information again, I will post it. I also seem to recall that some of the bottles were kept waxed, but that they were not recorked. Of course sealing wax, often used in the past, is all that keeps the cork from falling into some extremely old wines.

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