Recipe from Everyday Food magazine (September 2006).
* I use a gallon size resealable freezer bag instead of an airtight container.
3 cups flour
6 tablespoons sugar
2 tablespoons baking powder
1 1/2 teaspoons salt
Put all of ingredients into a resealable freezer bag. Seal and shake the bag.
When you store, press out most of the air and keep in a cool & dry place.