Raising Agents
- Created by: hannahharrison
- Created on: 07-06-17 10:02
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- Chemical Raising Agents
- Baking Powder
- Mixture of 2 chemicals, an acid and al alkali which react when there is heat and moisture
- e.g. bicarbinate of soda + cream of tartar = carbon dioxide gas bubbles
- Baking powder is added to plain flour which makes self-raising flour.
- Once a mixture with baking powder has been made, it needs to be baked quickly as it reacts quite fast.
- Used for making scones, cakes, sponge puddings and some biscuits
- Mixture of 2 chemicals, an acid and al alkali which react when there is heat and moisture
- Bicarbonate of Soda
- Also known as baking soda
- Produces Carbon Dioxide gas when there is moisture and heat
- Can only be used if there is strong flavors in the mixture as it leaves a soapy flavor
- If an acidic liquid such as lemon juice is added to the mixture a soapy flavor will not occur
- Yeast
- This is a tiny, single celled plant that can only be seen under a microscope
- When given moisture, warmth and food, it breaks down the food into CO2 and alcohol
- This is called fermentation
- The gas bubble make stretchy dough rise when it is left in a warm place for roughly an hour to prove.
- The alcohol evaporates in the heat of the oven when the dough is baked
- Commonly used for bread
- Available fresh and dried (both need to be activated with warm water and sugar) or fast acting dried (added directly to flour)
- Baking Powder
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