Purpose of the Fourth Side of Your Cheese Grater

Nobody is ever alone when they take a leisurely walk across the kitchen, open a drawer, and get that reliable cheese grater. Prepare to have your cheesecake or chocolate bar turned into a sprinkleable masterpiece with this ostentatiously basic equipment that is a mainstay in almost every kitchen. While the first three sides of a cheese grater are instantly recognizable, the fourth has long been a mystery.