A Caesar salad is a salad of romaine lettuce and croutons dressed with parmesan cheese, lemon juice, olive oil, egg, anchovies, garlic, and black pepper. It is traditionally prepared table side. The salad's creation is generally attributed to restaurateur Caesar Cardini, an Italian immigrant who operated restaurants in Mexico and the United States. Cardini was living in San Diego but he was also working in Tijuana where he avoided the restrictions of Prohibition. His daughter Rosa (1928–2003) recounted that her father invented the salad when a Fourth of July 1924 rush depleted the kitchen's supplies. Cardini made do with what he had, adding the dramatic flair of the table-side tossing "by the chef." A number of Cardini's staff have said that they invented the dish. Many variations of the salad exist; for example, by topping a Caesar salad with grilled chicken, steak, or seafood. Certain Mexican restaurants may improvise on items such as substituting tortilla strips for croutons or Cotija cheese for the Parmesan.