Caesar's Salad is a popular salad dish that was created by restaurateur Caesar Cardini in 1924. The traditional ingredients for the salad include romaine lettuce, croutons, Parmesan cheese, and a dressing made from olive oil, garlic, Worcestershire sauce, egg yolks, anchovies, and lemon juice. OVA is an abbreviation for the ingredient 'anchovies, ' which are small, salty fish that are often used in Italian cuisine.