Forgot to post this awhile back - disappointing yield from the mushroom crop, but those oysters I got were pearly white, and tasted vaguely of crab.
I sauteed them with garlic and herbs, and loaded them on a pizza with a pesto base.
Delicious. I'm going to re-soak the mushroom log and hope for another flush. I'm too cheap to buy these at the store, but I could get used to them. . .