Despite Japan's long history of cultivating grapes, the weather is too cold and damp for most popular varieties of wine grapes. Koshu grapes, the variety traditionally grown in the Koshu Valley ...

Of the 3,416 tons of Koshu grapes produced in Japan in fiscal 2018, 96 percent came from Yamanashi Prefecture. Typical beverages from Koshu wine grapes are slightly tart with flavors of citrus ...