I'm not really a great fan of mushrooms, but a few weeks ago I bought a mushroom growing kit because I thought that it would be fun for my daughter to water it each day and pick the mushrooms. I took a couple of pictures of the first mushrooms coming up, and then I forgot to take any more after that, but they grew so big that they were lifting the top of the box off. My daughter picks them and I cook them up with a little butter and garlic, which makes them quite yummy. We are certainly getting a lot of mushrooms, and they grow satsifyingly quickly, making way for the next crop. The mushroom straw is meant to be a good mulch for the garden once all the mushrooms have come up.