Store the mushrooms in the refrigerator. You can leave them in the package they come in. Leave them in the main part of the refrigerator to get good airflow (not the produce drawer). They will be better the sooner and fresher you eat them, and at their best no later than 7-10 days.
You don't need to wash them. Your mushrooms should be pretty well ready to eat, and not need anything other than a dry brushing.
We don't forage our mushrooms, we grow them (or maybe they grow for us). Our mushrooms are grown on sterilized substrates, typically enriched sawdust, as required by each species.
The American Mushroom Institute published a Memo on the subject, stating:
Mushroom-washing methods have been developed only as a means to enhance appearance, and remove mushroom compost flecks, not for food safety concerns. Because mushrooms are grown in a carefully controlled indoor environment, they are not subject to the same risks as field-grown crops. Agricultural risk factors such as flooding of fields, animal incursion, drainage from surrounding land uses, contaminated irrigation water, or incomplete composting of animal manure are eliminated in cultivated mushroom production.
The vast majority of mushrooms sold to both retail and foodservice customers are not washed, and there has never been a reported outbreak of food borne illnesses associated with the consumption of fresh mushrooms. No listeriosis outbreak has been linked to sliced mushrooms. Food safety research science has determined that fresh, unwashed mushrooms have a wide range of naturally occurring microorganisms on their surface which, in fact, help to prevent the growth of food spoilage bacteria and foodborne pathogens.
Mushrooms are quite versatile and can be incorporated into almost any dish, including stir-fries, soups, or salads.
Some species do better in different recipes, depending on their flavor and texture, and how they'll be prepared. Check out our Recipe Blog, and find recipes that we think fit certain mushrooms.
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