Need 'self-rising' flour from all-purp flour

[jessicacarr]

I am looking to bake biscuits and the recipe calls for self-rising flour, but I have all-purpose flour. What do I substitute to compensate for the 'non-self-rising' aspect of my flour?
Thanks!

 

[Selkie]

1-1/2 teaspoons of baking powder and 1/2 teaspoon of salt for every cup of all-purpose flour called for in your recipe.