10 cups all purpose flour
1/3 cup baking powder
1 tbsp salt
2 cups shortening
Recipe
1. Mix dry ingredients in a huge bowl. Cut in shortening with pastry blender, OR (this is what I do), combine 2 1/2 cups of the dry ingredients and 1/2 cup shortening in the food processor, gradually combining all of dry mix with shortening.
2. Keep tightly sealed. At room temp, it keeps a few months, longer in the fridge. I usually use all of my mix up in a month so I keep it in my baking supplies.