Cream of Tartar is also called potassium bitartrate and has the chemical formula KHC₄H₄O₆

Cream of Tartar is also used to manufacture baking soda, to tin-plate metals, and as a laxative in medicine.

Cream of Tartar has an indefinite shelf life if kept tightly closed and stored away from heat.

McCormick & Company obtains its supply of Cream of Tartar from Italy, where very small people crawl through the very small holes in open wine casks to scrape out the residue left after the wine has been fermented and drained out.