The primary ingredient in a typical Caesar salad is romaine lettuce. This salad is characterized by its crisp leaves, which are often combined with croutons, Parmesan cheese, and a distinctive Caesar dressing made from ingredients like garlic, olive oil, egg, lemon juice, and anchovies. The Caesar salad originated in the 1920s and has become a popular choice for its fresh flavors and satisfying textures. It is often enjoyed as a side dish or main course, especially when topped with grilled chicken or seafood.