【松葉納豆】いろんな植物で納豆は作れる｜納豆の作り方

I made natto using pine needles. Natto bacteria are a common bacteria found everywhere and are found on many plants. This time I used fir leaves, but some people also make it using perilla and other herb-type plants. The mechanism by which natto bacteria make natto is also explained in an easy-to-understand way, so it's a must-read for anyone interested in making natto.