chemical food component
potassium hydrogen tartrate
WIKIPEDIA:http://en.wikipedia.org/wiki/Potassium_bitartrate
Potassium hydrogen tartrate, also known as potassium bitartrate, has formula KC4H5O6, is a byproduct of winemaking. In cooking it is known as cream of tartar. It is the potassium acid salt of tartaric acid.
cream of tartar
potassium bitartrate
requires discussion