Pisco Sour Day is celebrated on the first Saturday in February, specifically on February 7 this year, in honor of Peru's national drink, the Pisco Sour. This cocktail is widely popular in Peru, featuring in various celebrations, and is served in nearly every bar and restaurant across the country. The drink is named after Pisco, a Peruvian grape brandy, and the term "sour," which refers to the citrus juice and sweeteners included in the cocktail. The origins of the Pisco Sour are debated, with claims from both Peru and Chile regarding its invention. Celebrations often include enjoying this iconic drink, highlighting its significance in Peruvian culture.