Radicchio Treviso is a variety of radicchio, a leafy chicory known for its elongated shape and deep red, wine-colored leaves with prominent white ribs. Originating from the Treviso region in Italy, it has a slightly bitter flavor that mellows when cooked, making it popular in Italian cuisine. Radicchio Treviso has a crisp texture and is often used in salads, but it can also be grilled, roasted, or sautéed to bring out its natural sweetness and reduce its bitterness. Its distinctive shape and flavor make it a favorite for adding complexity and color to dishes.