Little known outside of Winnipeg, Canada, the fat boy is a gloriously messy burger that has its origins in the city’s Greek community way back in the 1950s. At its core, a fat boy is a cheeseburger topped with mustard, onions, lettuce, tomatoes, pickles, a generous dollop of mayonnaise and, most importantly, a rich and meaty chilli sauce. Many of Winnipeg’s longstanding burger spots claim to be the inventor of the dish, but most credit it to Gus Scouras, founder of Junior’s Restaurant, which still has three locations today.