Despite the almost certain failure of the coffee grinds experiment, the oyster mushrooms in straw seems to be marching on towards the inevitable fry-up!
The leading fruitings are now a good inch or so across and consist of many little pinheads which I guess will each become a mushroom. I’ve moved the bundle nearer the window as I gather that UV is an important part of their fruiting development. The mushrooms “sweat” a clear liquid which is interesting too.