I’ve tried this two different ways. First was adding grain spawn on top of growing kombucha. That turned into a mold bomb, lol.
I also tried growing it on kombucha that I had taken out of it’s liquid, layed on cardboard, and pasteurized with a boiling water soak, and inoculated with a little grain spawn. That worked okay, but has been colonizing reaaaaaaaaaaally slowly.
I’m curious, @winnieponcelet did that mycelia grow while the scoby was dry, or did you moisten it once you saw it growing? Do you know how the mycelia got there (like a visible piece of something that had been colonized), or was it just magic? Is it still growing, or did something halt it?