In short, it is using crops waste as structure substrate and adding special fungus to develop its mycelium to combine all raw materials and solidify together in the mold. Usually, the mold is vacuum formed mold and the mycelium grow in the mold to expected dimension and shape. This process usually takes 3 days, then we remove the formed mushroom packaging from mold and dehydrate it. You can understand the shape and dimension of the mold decide the final mushroom packaging.