Definition

Noun: A white, crystalline salt with the chemical formula KHC₄H₄O₆. It is a byproduct of winemaking and is used primarily as a leavening acid in baking powder, where it reacts with baking soda to produce carbon dioxide gas. It is also known as cream of tartar.

Usage

This term is used in specific contexts related to chemistry, cooking, and baking. * It functions as a countable noun (e.g., "a teaspoon of potassium bitartrate"). * It is most commonly encountered on ingredient labels, in scientific discussions, or in detailed recipes.

Examples

• In Baking: "The recipe calls for potassium bitartrate to activate the baking soda."
• As an Ingredient: "Potassium bitartrate is a key component of many commercial baking powders."
• In Chemistry: "The precipitate formed was identified as potassium bitartrate."

Advanced Usage

• Technical/Industrial Context: In winemaking, potassium bitartrate can crystallize inside wine bottles, a harmless sediment often called "wine diamonds."
• Functional Description: It serves as a stabilizer for egg whites, increasing their heat tolerance and volume, which is crucial for making meringues and soufflés.

Variants and Related Words

• Cream of Tartar: This is the common culinary name for potassium bitartrate. It is used interchangeably in cooking contexts.
  • Example: "If you don't have baking powder, you can make it using baking soda and cream of tartar."
• Potassium Hydrogen Tartrate: A more systematic chemical name.
• Tartaric Acid: The parent acid from which potassium bitartrate is derived.

Synonyms

• Cream of tartar (common name)
• Potassium hydrogen tartrate (scientific name)

Notes on Meaning

This word has a single, precise scientific/culinary meaning. It does not have idiomatic or phrasal verb uses. Its usage is almost entirely technical or functional.

Noun

1. a salt used especially in baking powder