Cacciucco is a traditional Tuscan fish stew that originated in the coastal city of Livorno. 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, and herbs, and simmered until the flavors meld together. Cacciucco is typically served with toasted bread and a drizzle of olive oil. It is a rich and flavorful dish that showcases the bounty of the sea.