Grape varieties: Koshu 100%
Soil type: The vineyards are on a gentle slope. The perfectly-drained soil is moderately fertile and features large flat pebbles resulting from the erosion of nearby mountains.
Location: Isehara, in Yamanashi Prefecture
Average age of vines: 18 years
Vine density: Extremely low: 400-500 vines per hectare
Viticulture: The vines are trained on pergolas called tanashiki saibai. This makes harvesting easy and keeps the grapes far from the soil, which is wet much of the year, thereby reducing the risk of vine diseases.
Wine making: This white wine is made the traditional way in order to retain maximum freshness and aromatic intensity. The juice is fermented at very low temperature and the wine is not aged for long in order to lock in delicate citrus aromas typical of this grape variety.
Average yield: 2,000 bottles a year