Idk what truffle jar is but pf tek is my thing and thT would be very contaminated
I believe the pf tek technique is for the growing of mushrooms, and the substrate used in that technique has vermiculite and brown rice I think... However this jar only has organic rye, and I read that in this type of truffle growing, the mycelium should be white or yellow, but it can present blue/green color, that indicate bruises, not contamination. I'm not sure about this, that's why I asked for other opinions, but thanks
