How can I provide proper humidity to the fruiting chamber?
Pour out some perlite into a large colander (beware, perlite is dusty). Thoroughly wet the perlite then shake out the excess water. Dump the damp perlite into the fruiting chamber. You want about a 1 inch covering of damp perlite inside the fruiting chamber. Some mushroom farmers prefer to wet the perlite with a mixture of water and hydrogen peroxide in order to reduce the possibility of contamination inside the fruiting chamber (1 part 3% hydrogen peroxide to 9 parts water). Perlite is porous material, so it will help the water evaporate slowly over time. The slowly evaporating water will provide humidity inside the fruiting chamber. The goal is to get the humidity to reach 90% to 95%. Humidity is sufficient if you can see tiny water droplets condensing on the inside surface of the lid after about a day. Prepare the fruiting chamber ahead of time, before birthing the cakes, to ensure that it will do the job. To birth the cakes, gently remove them from the jars, brush off the top layer
