Tuna salad

Tuna salad is a salad dish consisting of tuna and mayonnaise. The tuna used is usually pre-cooked, canned, and packaged in water or oil. Pickles, celery, relish, and onion are popular ingredients to add. Tuna salad is used to make tuna fish sandwiches; it can also be served on top of crackers, lettuce, tomato, or avocado . Tuna salad has been eaten for over 100 years. The first written reference to tuna salad, in Russia, appeared in 1876, and by 1893, dozens of recipes had been published. Tuna salad, especially with celery, is similar to chicken salad while also being more convenient (due to the use of canned tuna), a fact that helped its early rise in popularity. Due to the high nutritional content of tuna salad, it assumed the reputation of a diet food in the 1960s.

Source: Wikipedia