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Romaine lettuce is also known as cos lettuce. It is a vegetable with a long head, composed of lanceolate leaves, slightly thinner than iceberg lettuce, but crispy. In Spain, they are known as 'oreja de mulo' (mule's ear). Its elongated head shape, intense green color of the leaves, and slightly bitter taste are its main characteristics. Its texture is crispy and its flavor is somewhat acidic. Properties and benefits: Romaine lettuce is rich in vitamins and minerals, such as vitamin A, C, K, B1, B2, and B3. In terms of minerals, its consumption is an easy way to provide magnesium and calcium to the diet. It has more vitamin K than iceberg lettuce. It is very rich in vitamin A and protein, making it ideal as a base for our salads. It reduces cholesterol levels and helps prevent bone loss. It is good for the health of our hair. It is best to consume it soon, as the fresher the leaves are, the more nutrients they will provide. Nutritional value per 100g: Energy 17kcal Carbohydrates 3.3g Sugar 1.19g Fiber 2.1g Sodium 8mg Water 94.61g Protein 1.23g Storage and tips: For the conservation of romaine lettuce and to make it last longer, it is best to separate the leaves carefully, wash them, dry them well, and store them in a sealed container in the refrigerator. Recipe and uses in the kitchen: Romaine lettuce is ideal for making a delicious Caesar salad. You will need chicken, croutons, bacon, and Parmesan cheese. The most important part of this salad is the dressing. For that, you will need about 50g of anchovies, juice of half a lemon, a tablespoon of mustard, 1 egg yolk, 1/2 garlic clove, and olive oil. In a blender, put the egg yolk, mustard, lemon juice, anchovies, and garlic clove. Blend everything until you get a texture like mayonnaise. For the salad, you need to season the chicken with salt and pepper and cook it in a pan until it is done. In a bowl, put the chopped and washed lettuce, the chicken, croutons, and some pieces of Parmesan cheese. To finish, add the Caesar dressing.