Kiuchi Brewery utilizes their hopped whiskey, Hitachino Nest, as the foundation for this ready-to-drink cocktail. They enhance it by infusing it with Umeshu, a renowned Japanese liqueur made from sour plums, resulting in a refreshing carbonated beverage. The perfect harmony of sweet and sour flavors creates an irresistible drinking experience that stands out from other ready-to-drink cocktails. Highly recommended for a unique and enjoyable beverage choice.