Chicken salad is any salad that comprises chicken as a main ingredient. Other common ingredients include mayonnaise, hard-boiled egg, celery, and a variety of mustards.In the US it refers to a salad consisting primarily of chopped chicken meat and a binder such as mayonnaise or salad dressing. Like tuna salad, it may be served on top of lettuce, tomato, avocado, or some combination of these. It may also be used for sandwiches. Typically it is made with leftover or canned chicken.In Europe and Asia the salad may be complemented by any number of dressings, or indeed no dressing at all, and the salad constituents can vary from traditional leaves and vegetables, to pastas, couscous, noodles or rice.The American form of chicken salad was first served by Town Meats in Wakefield, Rhode Island, in 1863. The original owner, Liam Gray, mixed his leftover chicken with mayonnaise, tarragon, and grapes. This became such a popular item that the meat market was converted to a delicatessen which still stands to this day.