Store fresh mushrooms in a paper bag or breathable container in the fridge’s main shelf, never in a sealed plastic bag, and they’ll keep for 7–10 days. Dried mushrooms last months in an airtight container away from light & moisture. Cooked mushroom dishes keep 3–4 days refrigerated. The method depends on the variety, how soon you’ll use them, and whether you want to preserve texture or concentrate flavour.
Why paper, not plastic: the case for breathable storage
Fresh mushrooms are mostly water, and they release moisture as they age. Plastic bags trap that humidity, creating a damp microclimate where mushrooms sweat, soften and develop spots within days. I’ve seen this happen countless times at West Norwood Feast markets—customers who take home oyster or shiitake in sealed bags find them slippery and compromised by the next morning.
A paper bag or a breathable container lets moisture escape while keeping the mushrooms from drying out completely. The fridge’s main shelf (not the crisper drawer, which is too humid) maintains the ideal environment: cool, with gentle air circulation. Keep them away from the back wall, where cold spots can cause condensation.
If you buy mushrooms in a plastic clamshell, transfer them as soon as you get home. Don’t wash them until you’re ready to cook. A damp cloth is fine if they’re visibly grimy—gourmet varieties like king oysters or shiitake rarely need more than that, since we grow and handle them carefully from start to harvest.
How long do fresh mushrooms last in the fridge?
Most fresh gourmet mushrooms keep for 7–10 days in the fridge when stored correctly. Button and cremini varieties are more resilient and may last slightly longer. Delicate types like oyster or chanterelle are best used within a week. Mushrooms stored in the crisper or in sealed bags often deteriorate faster because of moisture buildup.
Check them every few days. Discard any that smell off, feel slimy, or show significant dark spots or mould. A few light spots or slight softening at the edges is normal; that’s when they’re perfect for cooking down into sauces or stocks, where texture matters less than flavour.
At community events like our workshops at the Community Mycology Lab in Brixton, I always advise people to plan their cooking window before they shop. Gourmet mushrooms are best within the first few days—that’s when their texture is firmest and their flavour brightest. If you know you won’t cook them straight away, consider drying or pickling instead of storing fresh.
The best way to store dried mushrooms
Dried mushrooms are our answer to long-term storage—they last months, sometimes over a year, and concentrate flavour dramatically. We dry a range of varieties and sell them at West Norwood Feast and through our culinary product range. Store them in an airtight container—a glass jar with a tight seal works perfectly—in a cool, dark place away from direct sunlight and heat sources. A kitchen cupboard is ideal; a windowsill is not.
Moisture is the enemy. Even a tiny amount of humidity will rehydrate dried mushrooms in their container, inviting mould. Keep them away from steam (so not above the stove or beside the kettle) and avoid the fridge or freezer unless your kitchen is extremely damp. If you live somewhere very humid, add a small silica gel sachet or a single dried rice grain to the jar to absorb ambient moisture.
Label the container with the variety and the date you dried them (or the purchase date). Porcini, shiitake, oyster and chanterelle all dry beautifully and keep their depth of flavour for months. When you’re ready to use them, rehydrate in hot water for 15–30 minutes—the soaking liquid becomes a rich stock for soups or risotto.
Freezing mushrooms: when it works and when it doesn’t
Freezing fresh mushrooms isn’t ideal if you want to serve them whole or pan-fried. The ice crystals rupture the cell walls, so they thaw soft and watery. However, freezing is sensible if you plan to cook them into sauces, stocks, risottos or curries, where texture doesn’t matter and that released moisture adds body to the dish.
To freeze, slice the mushrooms, spread them on a tray and freeze until solid (2–3 hours), then transfer to a freezer bag or airtight container. This prevents them clumping into a single block. They’ll keep for up to three months. Don’t thaw them before cooking—add them straight from the freezer to a hot pan or into simmering liquid.
Cooked mushroom dishes (sautéed, in stews or pasta sauces) freeze far better than raw mushrooms. These keep for 3–4 months and reheat beautifully. If you’ve made a large batch of mushroom jerky or a seasoned powder (products we craft at the studio), freezing isn’t necessary—they’re designed for ambient storage and last months in a sealed jar.
Storing cooked mushrooms and prepared dishes
Cooked mushrooms keep for 3–4 days in the fridge in an airtight container. Sautéed mushrooms, mushroom risotto, soups and stews all reheat well. Let them cool to room temperature before refrigerating—don’t put hot food straight in the fridge, as this raises the temperature and risks food safety. Store them in the main body of the fridge, not on the door, where temperature fluctuates.
Pickled or preserved mushrooms (like those we sometimes prepare for market stalls) last much longer—often weeks or months, depending on the vinegar and salt content. Always follow the recipe or label guidance; if you’ve preserved them yourself, write the date on the jar and check the seal regularly.
Our mushroom jerky and dried seasoning powders are shelf-stable products designed for cupboard storage at room temperature. Keep them in airtight containers away from light and heat. They won’t spoil, but their flavour fades over time, so use them within a few months of opening for the best taste.
Practical storage for different varieties
Different mushroom varieties have different storage life. Shiitake and king oyster are sturdy and keep well for up to 10 days. Chanterelle, hedgehog and other wild or foraged varieties (the kind we source locally or offer on foraging walks through South London) are more delicate and best used within 5–7 days. Button mushrooms are the most resilient but offer less distinctive flavour—gourmet varieties are worth eating at their peak.
If you’re buying from a farmers’ market or grower like us, ask how recently the mushrooms were harvested. Freshly picked mushrooms keep longer than those that have been in storage for several days already. We grow small-batch for local restaurants and markets, so when you buy at West Norwood Feast or from our studio, you’re often getting mushrooms that are only a day or two old.
If you’re unsure, drying is the safest option. Any fresh mushroom can be dried—slice them thinly, spread on a tray in a warm, airy place (or use a low oven at 50–60°C for 4–8 hours), then store as above. This transforms a small glut into a shelf-stable ingredient you can use gradually over months.