You go to Kentucky Fried Chicken when you have a hankering for crispy chicken and mashed potatoes—but there’s actually a lot more to this fast-food chain than meets the eye (or stomach). Here are 9 finger-lickin’ facts about KFC that most people don’t know:

1. The recipe has remained the same since the 1930s, and it’s still a secret that’s kept locked in a safe in the headquarters.
2. Only two company executives can know the recipe at any given time.
3. The iconic KFC buckets came almost 30 years after inception, which included 14 pieces of chicken, five bread rolls and a pint of gravy.
4. The busiest day of the year for KFC is Mother’s Day.
5. Someone paid $21,510 for Colonel Sanders’s white suite and black bow tie at an auction. (It was the president and chief executive of KFC Japan, but still.
6. Japan celebrates Christmas by eating KFC. It’s such a tradition that most people have to pre-order their meals
7. The menu differs around the world—try a congee and tree fungus salad in China, spaghetti in Indonesia and a chickpea burger in India.
8. There’s a museum dedicated to the Colonel in Corbin, Kentucky.
9. China has more KFC outlets than America, but it’s still the fourth largest food chain in America.

Did you know any of these fun facts about KFC?