There is little that is more frustrating than attempting to prepare a recipe and realizing you're out of that ingredient you were so sure you had! I've compiled for you (and me!) a list of substitutes for a few common ingredients that I run short of or simply don't buy because of its limited use.
Biscuit/baking mix - this term is code for "Bisquick". For each 1 cup biscuit/baking mix called for in a recipe, use 1 cup all-purpose flour, 1 1/2 teaspoons baking powder, 1/2 teaspoon salt and 1 tablespoon vegetable shortening. Cut the shortening in with a fork or pastry blender.
Egg - 1/2 banana, mashed (medium size) + 1/4 tsp baking powder or 2 tablespoons applesauce or 1 tsp baking powder + 1 1/2 TBS water + 1 1/2 TBS oil
Buttermilk - for each 1 cup called for, stir together just under a cup of milk and 1 tablespoon of lemon juice or vinegar.
Self-Rising Flour - 1 cup all-purpose flour + 1 1/4 teaspoons baking powder + 1/8 teaspoon salt