When the mycelium hardens, truffles develop. The mycelium is a network of underground hyphae. Under normal conditions, these hyphae will develop into a fungus. When the environment is not conducive to the growth of mushrooms (because of drought, for example), the mycelium will create sclerotia. These sclerotia are also known as truffles. Truffles, like magic mushrooms, contain the hallucinogenic compounds psilocin and psilocybin. In the Netherlands, magic mushrooms are banned (as in many other countries). Truffles, on the other hand, differ from mushrooms technically and scientifically. As a result, truffles can be freely grown, purchased, and consumed in the United States and the Netherlands.
Is it Psilocybe cubensis, the Golden Teacher, or Truffles?
The vast majority of magic mushroom grow kits lack spores. Spores are legal in certain parts of the world, but allowing them to germinate is always illegal since it amounts to cultivating a Schedule 1 (or Schedule 9 or Class A narcotic, depending on where you are) drug. This indicates that if you purchase a kit, you must also purchase the spores.