Deep Ocean Traveler is a junmai sake from Matsuo Shuzo, a small brewery in Tosayamada, in Kami City, Kochi Prefecture. Its label is Matsuokina, and everything it brews is made from Kochi water and Kochi grown rice. The brewery is run by a small team.
What makes this bottle unusual is the yeast. Kochi's sake industry began experimenting with space yeast in 2005, and in 2021 a deep sea strain, AC-26, survived four months in the sea at a depth of 6,200 metres, under about 600 atmospheres of pressure. That is the yeast used here. The rice is Tosa rei, grown in Kochi, and the sake is dry at 16 per cent alcohol, with a sake meter value of plus 7. It has a light apple and banana aroma, crisp acidity and a clean, refreshing finish.
Serve it chilled, in a small glass or a wine glass. The brewery recommends it with Tosa seafood, especially sashimi, and it also stands up to fried and richer dishes. A dry sake like this one suits plain, fresh food such as raw fish or a simple tempura.