The origins of chicken salad are not entirely clear, but it is believed to have originated in the United States in the early 20th century. The earliest known recipe for chicken salad appeared in a cookbook called "The Good Housekeeping Everyday Cook Book" in 1897, which featured a recipe for "Mayonnaise of Chicken". The popularity of chicken salad grew in the 1920s and 1930s, when it became a popular dish for luncheons and social events.
Chicken salad typically consists of chopped or shredded chicken mixed with mayonnaise, along with other ingredients such as celery, onion, and herbs. The recipe has evolved over time, with many variations featuring different ingredients such as grapes, nuts, and dried fruit. Today, chicken salad remains a popular dish in the United States, and is often served as a sandwich or a side dish.