納なっ豆とう菌きん

noun

natto bacteria; Bacillus subtilis var. natto

Refers specifically to the bacterial strain used to ferment soybeans into natto. Common in food science and culinary contexts.

• 納なっ豆とう菌きんは大だい豆ずを発はっ酵こうさせて納なっ豆とうを作つくるのに使つかわれる。

  Natto bacteria are used to ferment soybeans and make natto.