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On Tue, 16 Jan 1996 [log in to unmask] wrote:
 
> Several delicious sounding recipes like the refrigerator sugar cookies
> that have been posted have cream of tartar included in them.  I am
> currently in Germany for 10 mo. and have not found the equivalent material
> here.  I'm pretty sure that it is a salt of tartaric acid but I'm not sure
> which one. In German, Weinsaeure is tartaric acid and Weinstein is
> presumably cream of tartar...
 
Confirmation that "Cream of Tartar" is Potassium Hydrogen Tartrate
C4H5KO6 known in German as Weinstein.
 
Paul Shattock