Dattan Soba Tea, a roasted Tartary buckwheat tea from Yamashiroya has been on sale at Fortnum & Mason’s Piccadilly flagship in London since 1 August 2026. It is currently available only in-store at the flagship, sold loose by weight.

The buckwheat is grown in Bungotakada, Oita Prefecture, Japan. The city is known for its buckwheat cultivation and its distinctive spring and autumn growing seasons. The tea is naturally caffeine-free.

Founded in 1707, Fortnum & Mason is a London department store known for its tea and fine food. It holds Royal Warrants.

Product information:

• Product: Dattan Soba Tea (roasted Tartary buckwheat tea)
• Ingredient: 100% Manten Kirari Tartary buckwheat grown in Bungotakada, Oita Prefecture, Japan
• Availability: Fortnum & Mason, Piccadilly flagship, London (in-store only, sold loose by weight)