What was medieval junk food like? If you're picturing knights eating Big Macs and Twinkies, you're not far off from the truth. Just substitute a meat pie for the Big Mac and a funnel cake for the Twinkies, and you'll have a good idea of what medieval people bought on the street. But knights didn't ride their horses to medieval drive-throughs. Instead, medieval junk food usually catered to the poorest people and travelers.