Definition of cream of tartar in English:

cream of tartar

noun

  • [mass noun] A white crystalline acidic compound obtained as a by-product of wine fermentation and used chiefly in baking powder.

    • ‘Other examples are bicarbonate of soda, cream of tartar, calcium oxalate, and saltpetre.’
    • ‘The commercial production of tartaric acid begins with potassium hydrogen tartrate obtained as a waste product from the wine industry.’
    • ‘Addition of an acid such as citric acid (found in lemon juice) or cream of tartar (which contains tartaric acid) also enhances inversion.’
    • ‘Add cream of tartar to the whites while beating; the acid stiffens and coagulates the egg-white protein, strengthening the walls of the bubbles.’
    • ‘Potassium bitartrate, also known as cream of tartar, is a weak organic acid.’