Dyer’s Burgers is a popular Memphis eatery that has been frying its meat patties in the same grease for over a century, claiming it is the secret to its delicious-tasting burgers.

Elmer “Doc” Dyer founded his now-famous burger joint in Memphis in 1912, betting on his secret mix of seasonings to make the patties irresistible. It worked, people loved Dyers’ burgers, but it wasn’t until one fateful night when one of the cooks forgot to change the grease in the pan that they became to-die-for. Kendall Robertson, the current owner of Dyer’s Burgers, claims that the next day, someone came in, had a burger and said ‘That’s the best burger I’ve ever had in my life’. That skillet of grease has never been changed since, so all the burgers are still cooked in the original grease that made the restaurant famous more than a century ago.