1. The ingredient which makes baked products rise.
LEAVENING AGENTS
The ingredient which makes baked products rise.

2. Types of Leavening Agents
Air
Steam
Chemicals
Yeast

3. AIR IS TRAPPED BY: Sifting Flour Creaming fat and sugar
Beating egg whites and batter
Oven heat makes air expand and the product rises.

4. STEAM Product contains relatively large amounts of water.
High temperature is used when baking.
Combinations of water and heat creates steam which makes the product rise.

5. CHEMICALS
Baking Soda must be mixed with acidic food (Example sour milk or buttermilk).
Baking Powder is a combination of dry acid and baking soda.
When chemical leavening agents are mixed with a liquid, the mixture gives off carbon dioxide (CO2).
Heat makes the carbon dioxide expand and the product rises.

6. YEAST Yeast is a living, microscopic, single-cell organism.
Yeast needs food, moisture, warmth in order to grow.
As yeast grows, it gives off carbon dioxide.
Heat makes the carbon dioxide expand and the product rises.