Raising agents

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. There are 4 different raising agents;
1.Air
2.Bread Soda
3.Baking Powder
4.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 introducedinto 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. Carbon Dioxide
Carbon Dioxide
HEAT
HOW CARBON DIOXIDE WORKS???

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