Boston lettuce is a type of leafy green vegetable known for its soft, tender leaves and sweet flavor. It has a loose, round head that resembles a small cabbage and is often used in salads, sandwiches, and wraps. The leaves are typically light green to pale yellow in color and have a smooth texture. This lettuce variety is rich in vitamins A and K, making it a nutritious addition to meals. Boston lettuce is also low in calories, which makes it a popular choice for those looking to maintain a healthy diet. It is best enjoyed fresh, as cooking can diminish its delicate texture.