Mix flour and salt; cut in shortening to cornmeal texture.  In separate bowl mix egg, vinegar, and water.  Add to dry ingredients.  Makes 3 single crusts.  Divide dough and roll out on lightly floured *No Mess Dough Board* cover.  It does not take a lot fo flour to roll this crust out.  Also great for tarts, cobblers, and dried pies.  Bake at 375 degrees F or until golden.