This is my first time making natto, I was unable to find any ready made so I have never seen it either. I also made with adzuki beans instead of soy due to allergies.
The steps I followed were
Soaked beans for 24hrs
Pressure cooker for 60 mins in instapot
Cooled them to 100f
Added natto bacteria I got online
Left in instapot for 18hrs on yogurt setting. Checking every few hours the temp which stayed between 98-103f.
It looked nothing like natto and I saw no webs when mixing, and had white patches on it. I think the beans were over cooked.
Any suggestions on the pic if this is eidable?