Question: How to make pie crust at home from 4 ingredients.
Option 0: Stir 1 1/4 cup salt and 1/4 tsp. pepper.  Using a pastry blender cut 1/3 cup shortening until pieces are pea sized.  Sprinkle 1 tablespoon of cold water over mixture, toss with a fork.  Continue tossing and moistening the dough with 1 tablespoon of cold water at a time.  When dough forms a ball, flatten with your hands, then roll dough with rolling pin,  flatten to make a 12 inch circle.  Carefully place in 9 inch pie pan.  Fill with filling.
Option 1: Stir 1 1/4 cup flour and 1/4 tsp. salt.  Using a pastry blender cut 1/3 cup shortening until pieces are pea sized.  Sprinkle 1 tablespoon of cold water over mixture, toss with a fork.  Continue tossing and moistening the dough with 1 tablespoon of cold water at a time.  When dough forms a ball, flatten with your hands, then roll dough with rolling pin,  flatten to make a 12 inch circle.  Carefully place in 9 inch pie pan.  Fill with filling.
Answer: 1