In some of the country wines I make this year, I may substitute
grape concentrate for some of the raw sugar that I have been using.
Does anyone have a guideline for quantities in this substitution?
Something like how many oz of concentrate to replace 1 lb of sugar.

I know the answer is 'it depends', and I'll have to carefully
measure the SG as I add it. I'm just looking for a rough estimate
so I know what quantities I should buy. I figure that I'll add
some grape concentrate, measure the SG, then gage how much more
sugar to add.

--
Joe
http://www.joekaz.net/
http://www.cafeshops.com/joekaz