Today July 4, 2014, is National Caesar Salad Day. A Caesar Salad is a salad of romaine lettuce and croutons dressed with parmesan cheese, lemon juice, olive oil, egg, Worcestershire sauce, garlic, and black pepper. It is often prepared tableside. The salad's creation is generally attributed to restaurateur Caesar Cardini, an Italian immigrant who operated restaurants in Mexico and the United States.