Versatile Cookie Mix

8 c. flour
2½ c. sugar
2½ c. packed brown sugar
2 T. baking powder
1 T. salt
2 tsp. baking soda
3 c. shortening

Mix flour, sugars, baking powder, salt, and baking soda in
6-quart bowl.  Cut in shortening with pastry blender just until
mixture resembles small peas.  Store in airtight container at
room temperature no longer than 10 weeks.  (16 cups mix)