Place nuts, margarine, salt and flour together in a bowl. Use a pastry cutter to work the mixture until it is uniform and resembles coarse corn meal. Gradually drizzle in the cold water, and graduate from pastry cutter to fork. Mix by pushing the dough into itself in the center of the bowl. When thedough adheres to itself, you've added enough water. Rll out the dough and form your crust. Chill until time to fill. Adapted from The Enchanted Broccoli Forest by Mollie Katzen. MM by Dianne Smith/DEEANNE