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 ...

Harpers took a separate deep dive into the world of Koshu following that tasting, courtesy of Grace Wine, which hosted its first UK masterclass at London’s Trivet restaurant, with winemaker Ayana ...

The first wine developed by the two companies was launched in Japan this week, with the Château Mercian Iwade Koshu Amicis 2023 – a white wine made from the Koshu grape – going on sale.