The primary ingredient in a Caesar salad is romaine lettuce. This crisp, leafy green serves as the base for the popular salad, complemented by a creamy dressing made from ingredients like garlic, anchovies, parmesan cheese, egg yolks, olive oil, and lemon juice. The traditional Caesar salad often includes croutons for added texture and flavor. Named after restaurateur Caesar Cardini, who is credited with its creation in the 1920s, the Caesar salad has become a classic dish served in restaurants worldwide. Variations may include grilled chicken, shrimp, or additional toppings, but romaine remains the essential component.