Definition

Baking powder is a chemical leavener, or raising agent, that contains a mix of baking soda and an acid which will react with the baking soda to begin producing leavening gases. Single-acting baking powder creates gas upon contact with water, double-acting baking powder creates gas upon contact with water as well as again, when heated.

Health considerations

The acid component of baking powder may contain aluminium. There are non-aluminium baking powders available. See: Aluminium

Keep in mind

Baking powders often contain anticaking agents such as corn starch; individuals sensitive to such products should be aware.

May be found in

Self-raising flour, cake mixes, quickbread mixes, batter mixes

References

BBC Good Food About.com: Chemistry

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