How to make baking powder from scratch

Baking powder is a mixture of bicarbonate of soda (also called baking soda) and cream of tartar. When it’s mixed with liquid it releases carbon dioxide gas and causes a batter or dough to rise. Buy it in small quantities and keep it dry in a sealed container or in the tin. If you run out of baking powder, you can always make your own – here’s the recipe.

How to make baking powder at home

To make baking powder, mix 2 teaspoons of cream of tartar with one teaspoon of bicarbonate of soda (the ratio is 2 parts cream of tartar to 1 part bicarbonate of soda). This provides the equivalent of 3 teaspoons of baking powder. Place in a clean jar and seal well. It lasts for about six weeks. You’ll need 1 teaspoon of baking powder for every 110g of plain flour (that’s the same ratio for home-made or commercial baking powder).

Make sure to stir the baking powder well before use and to sift it with the flour to ensure an even distribution.

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