1. VI. Leavening Agents What are leavening agents and how do they work?
1. Leavening agent- a substance that triggers a chemical reaction causing a baked food to rise.
2. Leavening agents make most baked foods less compact and give them a softer texture.

2. 3. Types of Leavening Agents
A. Air- this is trapped in mixtures as they are beaten. All of the following add air to a baked food.
1.Creaming fat and sugar
2.Sifting flour
3.Adding beaten egg whites
4. When the mixture is heated, the trapped air expands and the food product rises.
Example: Angel Food Cake

3. B. Steam- when a baked food contains high amounts of water, the water heats and turns into steam, which expands--- causing the product to rise.
Example- popovers and cream puffs.

4. 1. Example – bread, bagels, rolls 2. Yeast needs three things to grow:
C. Yeast- this is a microorganism that produces carbon dioxide gas as it grows--- making the baked food rise.
1. Example – bread, bagels, rolls
2. Yeast needs three things to grow:
Food (flour or sugar)
Liquid
Warm temperature

5. D. Baking Soda- when this comes in contact with an acid liquid (milk, buttermilk or yogurt) it produces carbon dioxide gas, making the food rise.
Example =quick breads (muffins, cakes, pancakes, cookies and biscuits)

6. E. Baking Powder- this is made from baking soda but also has a powdered acid such as cream of tartar. When it comes in contact with liquid, it also produces carbon dioxide…. making the food rise.
Example= quick breads
(muffins, cakes, pancakes, cookies and biscuits)

8. Leavening Agents What are leavening agents and how do they work?
_______________- a substance that triggers a chemical action causing a baked food to rise.
Leavening agents make most baked foods less compact and give them a softer texture.

9. Types of Leavening Agents
______- this is trapped in mixtures as they are beaten. All of the following add air to a baked food.
Creaming fat and sugar
Sifting flour
Adding beaten egg whites
When the mixture is heated, the trapped air expands and the food product rises.
Example: Angel Food Cake

10. ______- when a baked food contains high amounts of water, the water heats and turns into steam, which expands--- causing the product to rise.
Example- popovers and cream puffs.

11. Example – bread, bagels, rolls Yeast needs three things to grow:
__________- this is a microorganism that produces carbon dioxide gas as it grows--- making the baked food rise.
Example – bread, bagels, rolls
Yeast needs three things to grow:
Food (flour or sugar)
Liquid
Warm temperature

12. ___________- when this comes in contact with an acid liquid (milk, buttermilk or yogurt) it produces carbon dioxide gas, making the food rise.
Example =quick breads (muffins, cakes, pancakes, cookies and biscuits)

13. _____________- this is made from baking soda but also has a powdered acid such as cream of tartar. When it comes in contact with liquid, it also produces carbon dioxide…. making the food rise.
Example= quick breads
(muffins, cakes, pancakes, cookies and biscuits)