This pastry works well for pie crusts and patties. It has that melt-in-your-mouth feel typical of short crust. Please review my rules for short crust pastry making.
Mix the margarine and shortening lightly, then refrigerate for 20 minutes.
Cut the fat into smaller portions and add it to the flour. Using a pastry blender or your fingers and, working quickly and lightly, rub the fat into the flour until the mixture resembles fine bread crumbs. Add the salt. Add the water a tablespoon at a time, mixing only briefly after each ad