Jeff Chilton, CEO at Nammex (https://www.nammex.com), describes the mushroom lifecycle, how mycelium on grain (grain spawn or mycelium biomass) is made and what it really looks like.

Nammex is the leader in medicinal mushroom supplement ingredients, particularly organic mushroom extracts.

Our recent test results on mushrooms, mushroom extracts and mycelium on grain products show that mycelium on grain products have very little fungal material in them and very high amounts of starch which is from the grain as you can see in the video. Full test results can be seen here: https://www.nammex.com/redefining-medicinal-mushrooms/