In medium bowl, mix 2 cups of the flour and the salt. Cut in shortening, using pastry blender (or pulling 2 table knives through ingredients in opposite directions), until particles are size of small peas. Sprinkle with ginger ale, 1 tablespoon at a time, tossing with fork until all flour is moistened and pastry almost leaves side of bowl. Gather pastry into a ball. Divide in half. Shape into 2 flattened rounds on lightly floured surface. Wrap in plastic wrap; refrigerate about 45 minutes or until dough is firm and cold, yet pliable.