Caesar salad is a classic salad made with romaine lettuce, croutons, Parmesan cheese, and a creamy dressing. It originated in Tijuana, Mexico, but has become a popular salad worldwide. The romaine lettuce provides a crisp and refreshing base, while the croutons add a crunchy texture. The Parmesan cheese adds a salty and nutty flavor, and the creamy dressing ties everything together. Caesar salad is often served as a side dish or as a main course with the addition of grilled chicken or shrimp.