Romesco de Peix (Catalan Fish Stew in Romesco Sauce) is a classic recipe hailing from the Catalonia (Cataluña) region in northeastern Spain. The easy one-pot recipe uses fresh chunks of fish, some onion, and plenty of homemade romesco sauce. The flavors are layered with the rich romesco sauce, plenty of sweet and smoked paprika, and just a touch of fresh herbs and seasoning. This one-pot stew is quick and easy to make and requires only some simple cooking equipment. Made in 30 minutes, Catalan Fish Stew is the perfect midweek meal.