Mix together flour and salt in a bowl, then rub in shortening and butter or margarine until mixture resembles breadcrumbs. Sprinkle water evenly over mixture, then cut it in with a round-bladed knife or pastry blender until pastry begins to form large lumps. Press together gently with your fingers until pastry forms a ball. Roll out on a lightly floured surface until smooth, but do not over-handle. Wrap in plastic wrap and chill for 30 minutes before use.
Basic pie crust is the most versatile pastry and can he used for all kinds of applications, mainly tarts and pies. It is usually baked at 400°.