The Retro Cooking Hack You Need For Extra Spongy Cake - Chowhound

Susansam/Getty Images New is often synonymous with better, but in the world of cooking and baking, there's something to be said for time-tested advice. It may not be cutting-edge, but it has endured for good reason. Whether your grandma put her foot down about storing lemons in water to keep them fresh, swore by using starchy potato water to thicken soups or stews, or always put mayonnaise in her cakes to keep…