Roast Chestnuts Day is celebrated worldwide on December 14, honoring the beloved winter treat of roasted chestnuts. This day highlights a seasonal favorite, especially popular at Christmas markets and fairs. Roasted chestnuts, offered by street vendors in many places, come from various types like Japanese, Chinese, and sweet chestnuts. The custom of roasting chestnuts goes back a long way, with traditions such as gathering around bonfires on Saint Martin’s Day in Portugal. In New York City, roasted chestnuts have been a cherished street snack for over a hundred years, especially from late September through early spring. People mark the occasion by buying roasted chestnuts from local sellers or roasting their own at home, often sharing their moments on social media with the hashtag #RoastChestnutsDay.