Lentejas en ensalada is a traditional lentil salad that's enjoyed throughout Spain. The salad is usually made with a combination of Puy lentils, onions, carrots, garlic, olive oil, white wine vinegar, cloves, bay leaves, and salt. The onions are studded with cloves, and the lentils are boiled in a pan with the onions, bay leaves, carrots, and garlic.