Never Fail Pie Crust

Never Fail Pie Crust (makes ~3-6 crusts)
1 pound room temperature shortening
5 cups flour, sifted
1 tsp baking powder
1 tsp salt
1 egg
1 tsp vinegar
cold water

Cut shortening into flour, baking powder and salt with a pastry cutter. Continue until pieces are the size of large rice. Whisk egg in clear measuring cup. Add vinegar to cup. Fill cup to 3/4 mark with cold water. Whisk again. Add egg mixture to flour mixture. Mix with a fork, then with your hands. Only work it until it all sticks together. Divide dough into 6-8 balls, freeze to store.