Nice ones. I have grown them myself from a kit, and got a nice few. From this site fungi.com under indoor growing. I intend on growing shiitakes soon.
http://www.fungi.com/shop/indoor-growing.html
I noticed that a mild light really helps to bring them to their potential, and enlarge them. I had no problem but it did take some time for the first to pop up. I kept it consistently moist without over doing it.
What was cool, after it stopped growing, i broke up the kit and put it on some small branches a few months old in soil, then the following year I had more sprout. One of the best ways to grow these is to buy the wooden plugs. Use hardwood several months old, drill holes into them all over, then hammer them in. Find a shady spot, but with a small amount of dappled light, and bury them half way into the ground. Keep the log moist and you will get a lot more this way. Can take a year after starting, but will flush out a lot more than the kits.
Oak is some of the best wood to use for them. Just make sure its free of other fungus, and not super fresh or old. 3 to 4 months old oak works really well with them. They are a bit hard to grow, and many give up before they start their first flush.
