PF Tek is the most popular beginner method for growing mushrooms at home, and a sound place to start. In short, it means filling small jars with a mix of brown rice flour and vermiculite — a lightweight mineral that holds moisture — then introducing mushroom spores or liquid culture to begin the grow. From there it runs through four stages: preparing the substrate, sterilising the jars, inoculating, and fruiting. Used to grow legal gourmet species such as oyster or lion's mane, PF T … read more