Lettuce is a widely cultivated leafy vegetable, valued for its crisp texture and mild, refreshing flavor. It is a staple in salads, sandwiches, and wraps and is known for its high water content, making it a hydrating and low-calorie food option. Lettuce is available in several varieties, including romaine, butterhead, leaf, and iceberg, each offering different textures and tastes. It is rich in essential vitamins, especially vitamin K, and provides a good source of fiber and antioxidants.