In a large bowl, combine flour with 1/2 tsp salt, 1/4 tsp baking powder, and 2.5 cups flour with 1 cup shortening. Cut it with a pastry blender until it is crumbly. Then begin adding cold water or milk a little at a time, tossing with a fork until it forms a ball of dough. Divide the dough into six balls and chill them for at least 30 minutes