This authentic shochu is made with Kogane Sengan sweet potatoes, grown in Kagoshima Prefecture. It features the distinctive aroma of black koji, complemented by the mellow aroma and flavours of sweet potato. Serve neat, on the rocks or enjoy it in cocktails such as the Tokyo Mule. This authentic shochu is made with Kogane Sengan sweet potatoes, grown in Kagoshima Prefecture. It features the distinctive aroma of black koji, complemented by the mellow aroma and flavours of sweet potato. Serve neat, on the rocks or enjoy it in cocktails such as the Tokyo Mule. 2400 LONG LAKE ROAD, SUDBURY, P3E5H5, (705) 522-8000