Koshu is Japan’s signature white wine—delicate, elegant, and beautifully food-friendly. In this guide, we explore what makes Koshu so special, from its ancient Silk Road roots and Yamanashi heritage to Kazumi Wines’ rare Napa Valley-grown Koshu and Grace Wine’s acclaimed Japanese expression. Discover its flavor profile, food pairings, growing global reputation, and why this quietly refined grape is one of the most exciting wines to try now.