If you’ve ever wondered whether ketchup and catsup, wonder no longer: They’re two names for the same condiment. Which do you use?

As with the soda-versus-pop debate, this one likely depends on where you’re from — catsup is more common in the Southern U.S. and Mexico. And while no one can agree on the exact etymology of ketchup, the various theories are fascinating. One suggests that it comes from keh jup, the Cantonese term for tomato sauce, while another posits it derives from kicap, a Malay word meaning soy sauce.