"billb" > wrote in message
.. .
> Now I use crystaline Vit C from Trader Joe's -- got a big
>> botlle of that, should last me a long time
>
> how much do you add per gallon?

I don't understand why you wish to add ascorbic acid to a healthy wine. My
understanding is that it _promotes_ oxidation, rather than prevents it.

The only reason I know of for adding ascorbic acid to wine is if you have a
dimercaptan problem (rubber boot smell). It breaks the dimercaptan into
monomercaptan, and that can be treated with copper sulfate, usually followed
by activated charcoal.

Tom S
www.chateauburbank.com