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 but you need to add baking powder and salt to it.
Most recipes use 1 teaspoon of baking powder to 1 cup of flour.
The standard ratio of baking powder to plain flour is: 1 cup plain flour ,1 1/2 teaspoon baking powder, 1/2 teaspoon salt So to convert this amount for 2 1/4 cups flour, it would be: 2 1/4 cups flour, 1 tablespoon baking powder, 2/3 teaspoon salt Just keep in mind, this is baking powder, not 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.
2 grams
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.
What do you think?
Generally you use 1 to 2 teaspoons of baking powder to each cup of flour.
To make self-raising flour from all-purpose flour, you can add 1 tablespoon of baking powder for every cup of flour. Since 1 cup of all-purpose flour is approximately 4.5 ounces, this translates to about 0.23 ounces of baking powder per ounce of flour. Therefore, for every 4.5 ounces of flour, you'd use approximately 0.5 ounces of baking powder.
About one teaspoon of baking powder to 1 cup of all purpose flour
To substitute for 1 cup of self-rising flour, you can use 1 cup of plain flour along with 1 1/2 teaspoons of baking powder and 1/4 teaspoon of salt. This combination will replicate the leavening and flavor characteristics of self-rising flour. Adjust the quantities accordingly if you're using a different amount of flour.
None. Recipes calling for self rising will also call for salt. The only thing self rising has in it is baking powder. If you notice, most recipes use the ratio of 1 teaspoon of baking powder to 1 cup of flour. This is a common ratio, but some recipes can have more or less depending on what you are making.