Tuna salad is a popular dish made primarily from canned tuna, which is a type of fish. The tuna is usually mixed with ingredients like mayonnaise, celery, onions, and pickles to enhance its flavor and texture. It can be served on its own, in a sandwich, or atop a bed of greens. This dish is not only tasty but also nutritious, as tuna is a good source of protein and omega-3 fatty acids. Tuna salad is versatile and can be customized with various ingredients, such as hard-boiled eggs, avocado, or herbs, to suit individual preferences.