Combine dry ingredients and blend well. Combine oil and 3 tablespoons water and blend with fork. Add all at once to flour. Stir only until a ball forms. If ball appears dry and crumbly, add a little more water, one teaspoon at a time, until ball hangs together. (Moisture content of flour varies.)
Pat or roll crust to fit into pie pan. Dough tears easily, but mends easily using extra bits to patch. Prick with fork.