Iceberg lettuce is one of the most popular varieties of lettuce, known for its crisp texture and mild, neutral flavor. It has light green, tightly packed leaves that form a round head, and it's widely used in salads, sandwiches, wraps, and burgers. Iceberg lettuce is not only refreshing but also low in calories, making it a great choice for healthy eating. It's also a good source of vitamins A and K, as well as folate and fiber.