It is common for “baby mushrooms” (pins) to form inside the bag, particularly for species like Oyster and Lion’s Mane. You just can’t hold them back! Not to worry. You can either carefully cut a flap opening to allow those baby mushrooms to emerge, or you can just ignore them and wait for mushrooms to form at the opening you have already created. Keep in mind that the more holes you have cut into the bag, the faster the kit will dry out and you may need to rehydrate by soaking in water between crops. Note: If the “baby mushrooms” forming inside the bag are already fairly mature before you “set them free”, you might find they grow “leggy” with more stem or deformed once you “let them out”. Stems of most mushroom types are generally more chewy than the caps.