How to Buy Mushrooms
How to Store MushroomsStore mushrooms in a paper bag in the refrigerator or wrapped in paper towels and then loosely wrapped with plastic. Enclosing mushrooms in a plastic bag will make them sweat and spoil more quickly. Wild mushrooms will last for a few days stored this way; cultivated mushrooms will last up to a week or two.
How to Clean Mushrooms
Mushrooms are like sponges and will soak up any water they get near. Minimize how much water mushrooms are exposed to or they will get water-laden and soggy. Relatively clean mushrooms can simply be brushed clean with a pastry brush or dry paper towel. For more cleaning power, use a damp paper towel. If you must rinse or wash them, put the mushrooms in a large basin of cold water, swish them around, and quickly lift them out of the water and into a colander or layers of papers towels so the water can drip off the mushrooms quickly.
One trick I use with morel mushrooms that works well with any fungi infused with bits from the meadows and woods where they grew: start by putting them in a paper bag, shake fairly vigorously, and lift the mushrooms out of the bag. This will loosen dirt and other debris and leave it behind in the bag. Such mushrooms usually then require the rinse of water described above, but it's a good start to getting them clean!
How to Cook Mushrooms
Mushrooms are also delicious grilled (if they're large enough), cooked in soups, and used in a stuffing. This Cream of Mushroom Soup is a favorite at my house, as is this Mushroom-Stuffed Winter Squash