Minecraft wiki entry for Nether_survival, associated text: It is also possible to build an 8 by 8 platform, plant mushrooms on two opposite edges, and then use bone meal. This can provide you with a steady source of Mushroom Stew, and you can put torches or saplings in the other corners. On dirt or grass, mushrooms need a light level of 7 or below, but on podzol, mycelium, or nylium, applying bone meal causes them to grow into their respective huge mushroom type at any light level. Nylium is also the only block in the Nether on which you can farm mushrooms, and that is crucial (or alternatively, bring podzol or mycelium from the Overworld).