Swans Down Cake Flour is the one ingredient for which there is no substitute. The name should have been Swans Down Cake-Cookie-Pancake-Pastry-Biscuit-Pie Flour. But that would’ve been a little long. The same reasons Swans Down is ideal for cakes make it ideal for other baked goods. Its ultrasifted nature makes cookies more delicate, muffins more moist, pancakes fluffier, and more delicious.