bitartrate

Chemically speaking, this powder is potassium bitartrate, a salt of mild tartaric acid, with a whole range of useful kitchen applications, from stabilizing beaten egg whites to keeping caramels smooth and chewy.

My kitchen includes a bunch of chemicals that aren’t kept under the sink or handled only with gloves, including sodium bicarbonate, acetic acid, potassium bitartrate, lecithin, pectin, and ascorbic acid.

Lemonade holding bitartrate of potassium in solution is generally the most acceptable, and probably the most efficient.

Cream′-wove, woven of a cream-colour; Cream′y, full of or like cream: gathering like cream.—Cream of tartar, a white crystalline compound made by purifying argol, bitartrate of potash.

It is decomposed by a hot solution of potassium bitartrate.