Every year at the beginning of Lent, (the period in the Christian calendar between Ash Wednesday and Easter) WFPL publishes a guide to all the fish fries in Louisville. It's always one of our most popular stories of the year.

There are Facebook groups dedicated solely to rating the different fish fries around town. And hundreds upon hundreds of people line up in our city's churches every Friday night to eat fried fish, hush puppies, and macaroni and cheese.

This made US curious: Why exactly are there so many Catholic fish fries in the city? And what (aside from the delicious food) makes them so popular? WFPL's Ashlie Stevens investigates, in this edition of Curious Louisville.