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What are leavening agents?
Definition
Leavening agents are substances that are used to add gas to dough and other mixtures so they can expand and rise when heated.
Types of leavening agents
There are two main types of leavening agents: biological and chemical.
- Biological leavening agents include yeast and baking soda.
- Chemical leavening agents include baking powder and baking soda.
How leavening agents work
Biological leavening agents work by producing carbon dioxide gas. This gas causes the dough to rise.
Chemical leavening agents work by reacting with an acid. This reaction also produces carbon dioxide gas, which causes the dough to rise.
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