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You can keep mushrooms in the refrigerator for about 7 to 10 days if you store them properly.
That’s the honest answer to how long can you keep mushroom in the refrigerator, but the real trick is knowing that not all mushrooms age the same way.
If you’ve ever bought a fresh pack of cremini or button mushrooms and found them slimy within a few days, you’re probably doing something wrong with storage.
In this post, we’ll dig into how long can you keep mushroom in the refrigerator, the best storage methods to stretch that window, and the telltale signs that your mushrooms are past their prime.
Let’s help you keep those fungi fresh and delicious for as long as possible.
How Long Can You Keep Mushroom in the Refrigerator: The Exact Timeline
When you ask how long can you keep mushroom in the refrigerator, the answer depends on the type of mushroom and how you store them.
Here’s a quick breakdown of typical fridge lifespans for common varieties.
1. Button and Cremini Mushrooms
Button and cremini mushrooms are the most common supermarket finds, and they usually last about 7 to 10 days in the fridge.
This timeframe assumes you keep them in their original packaging if it’s ventilated, or transfer them to a paper bag.
If you leave them in a sealed plastic container, you’ll cut that time down to about 5 days because trapped moisture speeds up spoilage.
So when you’re thinking how long can you keep mushroom in the refrigerator for these types, aim for that one-week mark as a safe baseline.
2. Shiitake and Portobello Mushrooms
Shiitake and portobello mushrooms are a bit heartier, and they can last up to 10 to 14 days under ideal fridge conditions.
These varieties have firmer flesh and lower moisture content, which helps them resist the slimy breakdown that affects softer mushrooms.
If you’re asking how long can you keep mushroom in the refrigerator for shiitakes, you’ll find they hold up well for nearly two weeks.
Portobellos are the mature version of creminis, so they also do well when you pat them dry before storage.
3. Oyster and Enoki Mushrooms
Oyster and enoki mushrooms are more delicate, and they typically last only 5 to 7 days in the refrigerator.
These mushrooms have a higher water content and thinner caps, making them prone to getting soggy and developing off-odors quickly.
When you wonder how long can you keep mushroom in the refrigerator for oyster varieties, err on the shorter side and use them within the week.
Best Practices to Maximize How Long You Can Keep Mushroom in the Refrigerator
The number one reason mushrooms go bad early is excess moisture, so the way you store them makes a huge difference in how long can you keep mushroom in the refrigerator.
Follow these storage rules to get the most out of every batch.
1. Skip the Rinse Until You’re Ready to Cook
Never wash mushrooms before refrigerating them because added water invites bacterial growth and accelerates decay.
Instead, brush off any visible dirt with a soft cloth or your fingers while they’re still dry.
If you must rinse them, do it right before cooking and pat them thoroughly dry with paper towels.
This simple habit alone can extend how long can you keep mushroom in the refrigerator by several days.
2. Use Paper Bags Over Plastic
Paper bags are your best friend when you want to know how long can you keep mushroom in the refrigerator.
Unlike plastic, which traps humidity, paper allows excess moisture to evaporate while still protecting the mushrooms from drying out completely.
Place your mushrooms in a brown paper bag, fold the top loosely, and keep them in the main compartment of your fridge, not the crisper drawer if it’s sealed tight.
The crisper drawer can work too, just leave the vent open for airflow.
3. Store Them in a Single Layer
Piling mushrooms on top of each other creates pressure points and traps moisture where they touch, leading to bruising and rot.
Lay them out in a single layer on a paper towel inside a shallow container or open bowl.
You can cover them loosely with another paper towel to absorb any condensation.
This method is the gold standard for how long can you keep mushroom in the refrigerator because it mimics their natural respiration rate.
4. Keep Them Away from Strong-Smelling Foods
Mushrooms are like sponges, and they’ll absorb odors from onions, garlic, and cheese sitting nearby in your fridge.
Not only does this change their flavor, but it can also mask the early signs of spoilage.
A dedicated spot, like a higher shelf away from raw produce or leftovers, helps maintain their mild, earthy taste.
This is a subtle but effective way to improve how long can you keep mushroom in the refrigerator.
Signs That Your Mushrooms Are No Longer Safe to Eat
Even with perfect storage, there comes a point where you have to give up the battle of how long can you keep mushroom in the refrigerator.
Here’s what to look for to avoid foodborne illness or an awful taste in your dinner.
1. Slimy or Sticky Surface
If your mushrooms feel slick or sticky to the touch, that’s a sign of bacterial growth and microbial activity.
A little moisture is fine, but a persistent slime layer means they’ve started to decompose.
Once you see this, throw them out immediately because washing won’t remove the bacteria.
2. Dark Spots or Bruising That Spreads
Some browning is normal, especially on cremini and portobello mushrooms.
But if you notice dark, soft, water-soaked patches that grow larger each day, that’s rot setting in.
Cut off small dry bruises, but discard mushrooms with extensive or mushy dark areas.
3. Unpleasant, Sour, or Ammonia-Like Smell
Fresh mushrooms smell earthy and slightly sweet, not tangy or chemical.
A sour or fishy odor is a clear red flag that they’re past their prime, regardless of appearance.
Your nose is actually the most reliable tool for judging how long can you keep mushroom in the refrigerator because it catches spoilage before your eyes do.
4. Shriveled or Wrinkled Caps
Dried-out mushrooms that look wrinkled and leathery aren’t spoiled in the dangerous sense, but they’ve lost most of their moisture and flavor.
You can rehydrate them in water or broth, but they’ll never regain their original texture.
If they smell fine, they’re still safe to eat, just not ideal for sautéing fresh.
So, How Long Can You Keep Mushroom in the Refrigerator?
You can keep mushrooms in the refrigerator for about 7 to 10 days for most common varieties, with some firmer types stretching to 14 days.
The exact number of days you get depends on storage method, temperature, and the mushroom’s initial freshness.
Use paper bags, skip washing until cook time, and store them in a single layer to maximize how long can you keep mushroom in the refrigerator.
Trust your senses, and when in doubt, toss them out because spoiled mushrooms aren’t worth the risk.
Stick to these tips, and you’ll always get the most life out of every pack you bring home.
Happy cooking, and enjoy those perfectly fresh mushrooms while they last.