How to Make Natto Using Natto Spores

Previously, I have made a video about how to make natto using store-bought frozen natto as a starter.    • 納豆の作り方   In Canada, I am unable to find frozen natto these days. It made me decide to use natto spores. This video is about my first attempt using natto spores to make a batch of natto at home. References:    • Spore Starter Homemade Natto      • 粉末の納豆菌を使って納豆を作りました！