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Using self raising flour. Sieving the flour Rubbing in the fat to the flour, raising fingertips high. Adding buttermilk/baking soda
Yes. But add twice as much. When you use self-raising flour, add 1 tspoon of baking powder, to lighten the cake. So just add about 1 tbspoon if using plain flour.
No. Self raising flour already has baking soda mixed into it (which is another leavening agent used in cake baking)
As a household cleaning agent and as a raising agent in baking.
No
It is used as a raising agent.
Sodium bicarbonate (aka baking soda or baking powder).
yesMore information:Although the purpose of adding baking soda to cookie dough is to help the cookies rise, adding baking soda to a recipe that does not call for it could have the opposite affect. Too much baking soda, or adding baking soda in addition to baking powder, might also ruin the taste of the cookies.
You certainly can. Although self raisin flour has raising agents added you will have to add more. baking time is a little longer as you use a slightly lower heat setting
Baking soda
I'm not sure what you mean by mechanical, but raising agents like baking soda, baking powder, and yeast make foods light and fluffy.
If you do not use a raising agent when one is required, all that you bake will turn out flat and hard. You can however use raising agents other than baking soda such as beaten egg white or yeast.