Doughnuts have been around in some form for thousands of years, but a lot had to happen to make them the near-ubiquitous snack they are today. Learn about the history of doughnuts in this episode of BrainStuff, based on these articles: https://recipes.howstuffworks.com/5-things-didn-t-know-about-doughnuts.htm; https://history.howstuffworks.com/historical-events/ridiculous-history-vitamin-donuts.htm See omnystudio.com/listener for privacy information.