The main region for winemaking in Japan is in Yamanashi Prefecture which accounts for 40 % of domestic production .
Grapes are cultivated and wine is also produced in more limited quantities by vintners from Hokkaido in the North to Miyazaki Prefecture on the Southern island of Kyushu .
The main region for winemaking in Japan is in Yamanashi Prefecture which accounts for 40 % of domestic production , although grapes are cultivated and wine is also produced in more limited quantities by vintners from Hokkaido in the North to Miyazaki Prefecture on the Southern island of Kyushu .