We bought a $5 mushroom block to grow king trumpet mushrooms at home. We got it at a farmers market a few weeks ago
At first we cut a hole in the top of the bag and misted it twice a day for two weeks to help keep the bag humid and allow the mushroom mycelium to populate the substrate in the bag. After two weeks or so we got the first pins of mushrooms and they have expanded to proper sized mushrooms since then. I don't know if made the most out of them in terms of having the right conditions or too little or too much watering.
We have eaten a few browned in butter and olive oil. They have a firm meaty texture and could be used as a meat substitute I suppose. It's a really interesting experience and in the future I'd love to grow more edible mushrooms at home.