A doughnut or donut is a fried dough confectionery popular in many countries as a sweet snack. It is made from ingredients like flour, sugar, butter, eggs, and milk. The most common shapes are rings, holes, and filled doughnuts. There are three stories about who invented doughnuts, one involving a sailor named Hanson Crockett Gregory who poked holes in doughnuts to free his hands on a ship's steering wheel. National Doughnut Day is celebrated in the US on the first Friday in June each year to honor Salvation Army volunteers who served doughnuts to soldiers in World War I.