What’s your favorite type of pie? Peach? Chocolate? Key lime? Maybe a classic apple pie (à la mode, of course)? Whatever the filling, a truly great pie sits upon a great crust. Pie recipes generally call for just a few ingredients, but arguably the most crucial—and most debated—is type of fat that will go into the crust. Pie crusts are typically made with either butter, shortening, or lard, or some combination thereof.