Sift flour, salt if desired, baking powder, and baking soda into a large bowl. Using a pastry blender or fork, cut the margarine into the flour mixture until it resembles coarse meal. In a measruing cup, combine soy milk and honey or syrup. Add the liquid mixture to the flour mixture, stirring with a fork to form a stiff dough. Add more buttermilk if dough is too dry. Knead lightly in bowl, about 3 to 5 minutes, until the dough is no longer sticky. Thenturn out onto lightly floured surface.Rollout into desired shape. Makes enough crust to cover a 9by 12-inch baking pan. Per serving: 128 cal; 4 g prot; 3 g fat; 21 g carb; 0 chol; 211 mg sod; 1 g fiber; vegan Adapted from Vegetarian Times, Nov 93/MM by DEEANNE