Tannat Day is observed in Uruguay every April 14 to honor Pascual Harriague, the Basque settler who introduced the Tannat grape variety to the country in the 1870s. This celebration promotes Uruguayan wines, particularly Tannat, which has become the most widely planted grape variety in Uruguay and is grown across all wine regions. The National Viticulture Institute declared this day in recognition of Harriague's contributions, coinciding with his death anniversary. On Tannat Day, people celebrate by learning about Tannat and other Uruguayan wines, sharing a bottle with friends, attending wine tastings, or participating in food pairing classes. Uruguayan Tannat wines are noted for their refreshing acidity and complex flavors, making them suitable for pairing with rich foods like cassoulet and grilled meats.