If you buy bulk mushrooms that you don’t intend to use in a day or two, I have a solution for you to help maintain their freshness. If you use the plastic bags provided in the produce department, after a few days you’ll find your mushrooms have a slimy feel to their caps and may even find them peeling as they stick to the inner bag. If you use the paper bags provided in some stores, your mushrooms will dry out and become crusty.
Then I discovered that placing your paper bagged mushrooms in the plastic bag (double lined bag) provided the optimal environment to keep them fresh a lot longer. The bag would absorb the moisture from the mushrooms, becoming slightly damp, and keep the internal humidity just right.
This should help you get a few more days out of your mushrooms, which is a good thing.
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