Once upon a time, there was a captain Gray who loved to eat fried bread made by his mother when he was a child, but he found that the central part of the fried bread was not fully cooked because of the lack of frying time, so Gray's mother dug out the central part of the fried bread and fried it again, and found that it tasted even more delicious, so she named it doughnut. In Asia, doughnuts are mainly regarded as snacks, but in the United States, many people take doughnuts as their staple food for breakfast, and even set up a "doughnut day". Health, love and sweetness are the meaning of donuts.