Cacciucco is a hearty Tuscan fish stew that originated in Livorno, a coastal city in Tuscany. It is made with a variety of fish and shellfish, such as mussels, clams, squid, and different types of white fish. The stew is flavored with tomatoes, garlic, onions, herbs, and red wine. Cacciucco is typically served with toasted bread to soak up the flavorful broth.