Name: Baking Powder
Ingredients: 6 ounces tartaric acid; 8 ounces baking soda; 1 quart flour

Baking Powder

Ingredients

6 ounces tartaric acid
8 ounces baking soda
1 quart flour

Directions

Sift tartaric acid, baking soda, and flour together six times to thoroughly mix the ingredients.
Use this mixture in the same quantity as any other baking powder.

Recipe from a historical cookbook (Internet Archive).

Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.

Explore the science

What each ingredient does

Tartaric acid: Provides the acid that reacts with baking soda to release gas for rising.
Baking soda: Supplies the alkaline base that reacts with the acid to produce carbon dioxide for leavening.
Flour: Bulks out the mixture and keeps the acid and base separated so they react only when moistened.

“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.