What does mycelium feed on?

Online Answer
Working much like single-celled yeast, mycelium takes in small molecules of food—typically sugar but often from sources such as wood or plant waste—by excreting enzymes that break these materials down into digestible morsels.
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Mycelium is kinda like infected grass. It's been infected with mushroom disease. If a sheep somehow wanders onto some mycelium and eats it, it should die. Cows that walk on mycelium would become mooshrooms, 'cause the stuff's contagious.
mushroom mycelium is "very potent in terms of triggering immune cell function." fermented substrate, even when separated from pure mycelium, is highly active in supporting natural immune function. pure mycelium and fermented substrate each offer unique yet complementary health benefits.
Yes! This is a good idea as it is hard to get mushrooms. ... This will help players get mushrooms if they encounter a mushroom island. I like this idea also as when you bonemeal a grass block, you get flowers and grass on top of that grass block so this should happen with mycelium too, except with brown and red mushrooms..
Once removed from their chilly growing environment, the extremely temperature-sensitive mushrooms -- which are still alive when harvested -- release their spores, which rapidly grow into white fuzz called mycelium. The good news is that it's safe and absolutely edible.
mushroom mycelium is "very potent in terms of triggering immune cell function." fermented substrate, even when separated from pure mycelium, is highly active in supporting natural immune function. pure mycelium and fermented substrate each offer unique yet complementary health benefits.