Caesar salad is a salad of romaine lettuce tossed with croutons, grated Parmesan cheese, and anchovies in an egg-based dressing of olive oil, lemon juice, garlic, and Worcestershire sauce. Created in Tijuana in the 1920s, it is traditionally prepared tableside and finished with the dressing emulsified to coat each leaf. The combination delivers crunch, saltiness, umami, and creaminess in balance. Classic versions use raw egg yolk, so caterers often use pasteurised eggs or mayonnaise-based dressings for safety. Grilled chicken or prawns turn it into a main course, though additions raise its calorie and sodium content.