National Chicken Salad Day is celebrated annually on June 3, honoring a beloved deli classic with deep New England roots. The holiday was founded by Stop & Shop to highlight the creativity and comfort of chicken salad, which is believed to have originated in the United States in 1863 when Liam Gray combined leftover chicken with mayonnaise, tarragon, and grapes. Today, chicken salad is a staple at family gatherings, summer picnics, sandwich shops, and grocery deli counters across the country. The day is particularly fitting for Stop & Shop, a Northeast grocer, as it showcases their fresh-made rotisserie chicken salad, which features tender chicken blended with creamy mayo and crisp celery. Celebrations typically involve enjoying chicken salad with friends, emphasizing the dish's resourcefulness and flavor.