1 1/2 t
Add one rounded teaspoon of baking powder to each cup of flour. I frequently do this and it always work. Note - not a flat teaspoon of baking powder, not a heaped teaspoon but a rounded teaspoon!
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
I don't know how much volume 4 oz. will be, but most recipes use the ratio of 1 teaspoon of baking powder to 1 cup of flour. Weigh the flour, measure it and find the amount of baking powder that way.
You can't. Self rising flour has enough baking powder in it for itself. You can't add more flour to it and expect it to work.
One to one and a half teaspoons of baking powder and a pinc to one half teaspoon of salt to a cup (125 g) of flour.
Self rising flour is flour with baking powder and salt added to it. It is also finer, therefore it is good for baking because if you use regular flour you have to add the baking powder to it.
Follow the recipe for the amount of baking powder to use whether your using regular flour or cake flour. Neither of them have baking powder, unless it is "self rising" which means leavening is included.
About 1.5 teaspoons. If the recipe calls for self raising flour and you don't have any then add 1.5 teaspoons of baking powder and 0.5 teaspoons of salt.
you would!
Yes. Do you have to add baking powder for cookies?
Baking powder - add two teaspoons of baking powder to each cup of plain flour. In America they call "plain flower" all "purpose flour", in Australia where I am from we have 2 main types Plain & self raising. :)