I had a strange fail with my usual succesful black beans tempeh. 300 Grams black beans, soaked 24 hours and cooked in pressure cooker. Fermented with 1 teaspoon Indopal and 2 teaspoons Lactic Acid in incubator at 30°. After one day a tiny bit of colonisation visible on the outside. After two days the outside colonisation had grown just a little, inside temperature 39°. Lowered temperature of incubator from 30° to 27°. Day 3 I gave up, the colonisation on the outside turned out to be black with yellowish spots and the taste was very sour. I have no idea what went wrong, any clues most welcome.
Thank you for your kind interest.
https://photos.app.goo.gl/HTTK4pBpf92SyDwD7