To make self-raising flour at home, combine 100 grams (about 3/4 cup) of plain or all-purpose flour with 1 level teaspoon of baking powder. Mix the two ingredients thoroughly until the baking powder is evenly distributed throughout the flour. This mixture can then be used as a substitute for store- bought self-raising flour in recipes.
For larger quantities, a common ratio is 1 cup of all-purpose flour plus 2 teaspoons of baking powder and optionally a pinch of salt (around 1/16 teaspoon). Mix all together well, preferably whisk or sift the mixture to ensure even distribution. Store the self-raising flour in an airtight container if you make a batch ahead.
This DIY method allows quick preparation of self-raising flour from basic pantry ingredients when you do not have store-bought self-raising flour available.
