Asahi Shuzo Co is a Japanese brewery that produces sake under the Dassai brand. Founded in 1948, it is located in the mountains of the Yamaguchi prefecture, well positioned for supplies of clean water and equipped with a 200-feet (60-meter) deep well. The brewery is unusual in that it focuses entirely on premium Junmai Daiginjo sake. Top-grade Yamada Nishiki rice is sourced from contracted farms in nine different prefectures. Dassai was the first sake to be made with a centrifuge in place of a conventional press to achieve extra smoothness and cleaner flavors. The brand name Dassai means "otter festival". *Kosher since 2011*