Crostini di Fegato is a traditional Tuscan appetizer that is popular in Florence. It consists of toasted bread slices topped with a spread made from chicken liver, capers, anchovies, onions, and olive oil. The spread is typically seasoned with salt, pepper, and a splash of vinegar. Crostini di Fegato is a savory and flavorful starter that pairs well with a glass of Tuscan wine. It is a must-try for those looking to explore the local culinary traditions.