The most frequently found mushroom for me this summer has been the Oyster (Pleurotus ostreatus). They have popped up on a variety of dead hardwood logs including oak and birch.  The last fresh batch that I found was fried in tempura. The recipe found here included a few basic ingredients of flour, baking soda, corn starch, egg and cold water.  It came out very tasty and will surely be made again.