"Cream of tartar" - Potassium bitartrate can be mixed with an acidic liquid such as lemon juice or white vinegar to make a paste-like cleaning agent for metals, or with water for light stains from porcelain. This mixture is sometimes mistakenly made with vinegar and baking soda, which neutralize each other. Cream of tartar, when mixed into a paste with hydrogen peroxide, can be used to clean rust. The paste is applied and allowed to set for a few hours.
items like cream of tartar (potassium bitartrate) are not simply a super way to stabilize egg whites but also scandalously inexpensive cleaning secrets. This long-forgotten gem of a cleaning agent may be used with a little water or vinegar to lift even the most stubborn stains. Mold and mildew stains got you reaching for the Prozac? Burner pans and casserole dishes giving you fits? Cream of Tartar is your new best friend... follow link
Cream of Tartar or Potassium Bitartrate Facts and Uses