1. Raising Agents
© PDST Home Economics

2. What is a Raising Agent? A raising agent is something that makes
bread and other foods rise.

3. THINK ABBY!!!! There are 4 different raising agents; Air Bread Soda
Baking Powder
Yeast
THINK ABBY!!!!

4. 1. Air
In all baked foods, it is important to get lots of air into the mixture
Air expands when heated and makes the food light

5. Air is introduced into a mixture by;
1. Sieving the flour
2. Rubbing fat into flour, high over the bowl
3. Creaming/beating fat and sugar
4. Whisking eggs and sugar

6. Chemical Raising Agents
Bread Soda
Baking Powder
Equation to show how Chemical Raising Agents Work!!!!
Alkali + Acid = Carbon Dioxide

7. HOW CARBON DIOXIDE WORKS???
HEAT

8. 2. Bread Soda
Bread soda is alkali
When mixed with buttermilk (acid) and a liquid it makes CARBON DIOXIDE
The CARBON DIOXIDE expands and rises when heated, raising the dough

9. 3. Baking Powder
Baking powder is a mixture of bread soda and an acid
When moistened by eggs or milk CARBON DIOXIDE is produced
The CARBON DIOXIDE expands and rises when heated, raising the dough

10. 4. Yeast
Yeast is a micro organism
It produces CARBON DIOXIDE in the dough
The CARBON DIOXIDE expands and rises when heated, raising the dough
Used in commercial breads

11. What happens when queen cakes are placed in oven???
Result??
When making queen cakes what raising agents are used????
What happens when queen cakes are placed in oven???