In the Hosaka district of Nirasaki City, Yamanashi Prefecture, which rises from the northwestern corner of the triangular Kofu Basin, is a leading wine grape producing area in the prefecture located at the foot of the vast Chigayama mountain. The southwest slope of the mountain foothills at an altitude of 400 to 700 meters belongs to the "sunshine hours" are long and "low rainfall cool climate zone", and grapes nurtured by the natural environment brought by the "winds running through the foothills" and "slightly sticky soil" have a "high concentration" and "strong backbone" flavor. At Hombo Shuzo Mars Yamanashi Winery, they have realized a wine-making process that combines "ancient wine-making in jars" and "modern wine-making methods" by applying the techniques cultivated over more than 100 years since its founding as a pioneering figure in jar-brewed shochu making to wine-making. The wine made from Muscat Bailey A grapes from the Hosaka district, fermented slowly in jars, has a "pleasantly sweet aroma" and a "soft and mellow taste". It is an excellent medium-bodied red wine made in jars.