Lettuce contains vitamins A, C, K, and folate. Lettuce is best suited for fresh applications and is most commonly used as a wrap, garnish, in salads, or as a layer in a sandwich. The leaves can be torn or sliced and used as a crunchy element in a salad, layered in burgers or sandwiches. Lettuce leaves are tender, smooth, and broad with many curls and frills. The leaves have a mildly sweet or semi-bitter flavour, and the bitterness often occurs in maturing greens versus young greens.