Prepare. In a large bowl, mix together all of the ingredients.
Mix. Whisk until the baking powder is evenly distributed.
Enjoy. It is ready to use immediately, or you can store it in an airtight container for later use.
Notes
Storing Instructions:
This SRF mixture can be stored in an airtight container at room temperature for up to 6 months.
It's a good idea to keep it in a glass jar to see how much you have left at a glance.
Make Ahead Instructions:
Self-rising flour (SRF) is a mixture of 3 pantry ingredients. By mixing them up ahead of time, you ensure that they are evenly mixed together and ready to add.
When mixing in a few teaspoons of a leavening agent like baking powder with cups of flour and other ingredients, there's a chance it won't be properly mixed throughout. This can cause a low or spotty rise in baked goods.