My mushrooms use to get all slimy before i could use them all, so I did some thinkin!haha and this is what i do now and it works!
I put my mushrooms into a brown paper bag in my fridge.
This way they can dry out before they go slimy if i dont use them fast enough. I can reconstitute them in some hot water or just crumble and add
directly to my sauces, soups etc. When they dry out like this they will last a long time!