Storing, drying and freezing oyster mushrooms
Store fresh oyster mushrooms unwashed in the fridge, in a paper bag or the original tray, and use them within 2 to 3 days. If you want to keep them longer, dry them or cook them first and then freeze them. Never eat them raw.
Voedingscentrum · BO-01Penn State Extension · BO-04National Center for Home Food Preservation (University of Georgia) · BO-03Voedingscentrum · BO-02These guidelines apply to mushrooms in general. They have not been studied separately for oyster mushroom.
Voedingscentrum · BO-01Penn State Extension · BO-04In the fridge
Store them unwashed, in a paper bag or the breathable tray, not in a closed plastic bag: that causes condensation and they spoil faster. Only wash or wipe them just before use. Expect 2 to 3 days.
Voedingscentrum · BO-01Penn State Extension · BO-04Drying
Clean them, remove hard parts such as the base, slice them and dry them in a food dehydrator for about 8 to 10 hours until brittle. The source does not say how long dried oyster mushroom keeps.
Penn State Extension · BO-04Freezing: cook first
Never freeze mushrooms raw. Blanch or steam them first, or sauté them in butter until almost done. Steaming times according to the NCHFP: whole 5 minutes, buttons or quarters 3.5 minutes, slices 3 minutes. Cool them quickly and freeze them with some headspace in the packaging. After about 3 months the quality declines.
Voedingscentrum · BO-01National Center for Home Food Preservation (University of Georgia) · BO-03Penn State Extension · BO-04Why not raw?
The Voedingscentrum advises against raw mushrooms: harmful bacteria such as listeria may be present, and they contain agaritine, which is partly broken down by heating.
Voedingscentrum · BO-02Cleaning
Preferably do not rinse oyster mushrooms under running water: they absorb moisture easily and go limp. Wipe them clean, or rinse them briefly just before frying and pat them dry.
Voedingscentrum · BO-01Penn State Extension · BO-04Source
- Hoelang kun je champignons, rauw bewaren? — Voedingscentrum
- Kan je champignons/paddenstoelen rauw eten? — Voedingscentrum
- Freezing Mushrooms — National Center for Home Food Preservation (University of Georgia)
- Preparing and Preserving Mushrooms — Penn State Extension
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Always cook mushrooms thoroughly. This is general public guidance, not personal nutrition or medical advice.
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