International Sticky Toffee Pudding Day is observed worldwide every January 23, celebrating the popular British dessert known for its moist sponge cake and sticky toffee sauce. The origins of sticky toffee pudding are somewhat unclear, with various pubs claiming to have invented it, the earliest dating back to 1907. It gained popularity in the 1970s in Cumbria, influenced by a recipe shared by Royal Canadian Air Force officers during World War II. The dessert is often served with vanilla ice cream or custard, complementing its rich flavors. To celebrate, enthusiasts can enjoy sticky toffee pudding, whether homemade or purchased, and share their experiences on social media using the hashtags #InternationalStickyToffeePuddingDay and #StickyToffeePuddingDay.