cream of tartar

American  

noun

1. a white, crystalline, water-soluble powder, C 4 H 5 KO 6 , used chiefly as an ingredient in baking powders and in galvanic tinning of metals.

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cream of tartar British  

noun

1. another name for potassium hydrogen tartrate, esp when used in baking powders

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Etymology

Origin of cream of tartar

First recorded in 1655–65

Example Sentences

Add flour and mix well together, adding remainder of milk as required – also bicarbonate and cream of tartar.

From BBC • Feb. 28, 2025

Use a stand mixer with a whisk attachment to beat the egg whites and cream of tartar on medium speed for 30 to 45 seconds until combined.

From Washington Times • May 16, 2023

A transparency tab lists ingredients — organic grapes, sulfites, cream of tartar, tartaric acid, yeast, yeast nutrients and organic cane sugar for sparkling wine.

From Washington Post • May 19, 2022

When baking soda is combined with an acidic ingredient such as lemon juice, vinegar, cream of tartar, or buttermilk, it will cause baked goods to rise.

From Salon • Mar. 2, 2022

She ask about hard water stains and I tell her cream of tartar.

From "The Help" by Kathryn Stockett