How long do mushrooms last in the fridge? Fresh, whole mushrooms typically stay fresh for 4-7 days when stored properly, while sliced mushrooms last 1-2 days. To extend their shelf life, avoid plastic bags and sealed containers, store them in a paper bag, and do not wash until ready to use. For long-term storage, freezing or dehydrating mushrooms can keep them fresh for up to 12 months.
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How Long Do Mushrooms Last in the Fridge?
Mushrooms are delicate and high in moisture, making them prone to spoilage if stored improperly. The shelf life depends on how they are stored and whether they are whole, sliced, or cooked.
| Mushroom Type | Refrigerator Life (Fresh) | Refrigerator Life (Cooked) | Freezer (Blanched or Sautéed) |
|---|---|---|---|
| Whole Mushrooms (Button, Cremini, Portobello, Shiitake) | 4-7 days | 3-5 days | 10-12 months |
| Sliced Mushrooms | 1-2 days | 3-5 days | 10-12 months |
| Oyster Mushrooms | 5-7 days | 3-5 days | 10-12 months |
| Magic Mushrooms | Up to 7 days | Not recommended | Best stored dried |
| Amanita muscaria | Not recommended fresh | Best dried | 10-12 months |
🔍 Key Tip: Always check mushrooms for signs of spoilage before using them.
How to Store Mushrooms for Maximum Freshness
âś… Best Storage Methods for Fresh Mushrooms
- Use a Paper Bag – Store mushrooms in a brown paper bag in the fridge to allow air circulation and prevent moisture buildup.
- Avoid Plastic Bags & Sealed Containers – Plastic traps moisture, leading to slimy, moldy mushrooms.
- Do Not Wash Until Ready to Use – Water speeds up spoilage; instead, brush off dirt with a dry paper towel or mushroom brush.
- Keep in the Crisper Drawer – The refrigerator’s vegetable crisper provides the right balance of humidity.
- Store with a Dry Paper Towel – Placing a paper towel inside the bag absorbs excess moisture.
❌ Common Storage Mistakes That Shorten Mushroom Lifespan
- Storing in a sealed plastic bag (causes excess moisture and faster spoilage)
- Washing before storage (introduces moisture that speeds up rot)
- Leaving them at room temperature (causes them to dry out or spoil faster)
How to Tell If Mushrooms Have Gone Bad
It’s important to check for spoilage before consuming mushrooms. Look for these signs:
âś” Fresh Mushrooms Should Be:
- Firm & Dry – No slimy or sticky texture.
- Mild, Earthy Smell – Mushrooms should not have a sour or ammonia-like odor.
- Uniform Color – No dark spots or mold.
❌ Bad Mushrooms Show Signs of:
- Sliminess – A slippery or sticky surface means they are starting to rot.
- Dark Spots & Discoloration – Brown or black spots indicate decay.
- Wrinkled & Shriveled Texture – Dehydration leads to a tough, dry texture.
- Foul Odor – A strong, off-putting smell means they should be discarded.
đź’ˇ Pro Tip: If mushrooms are only slightly dried out but not spoiled, you can revive them by soaking them in cold water for 10-15 minutes before cooking.
How to Preserve Mushrooms & Extend Their Shelf Life
If you want to store mushrooms for months, here are the best preservation techniques:
1. Freezing Mushrooms
Mushrooms should not be frozen raw, as they become mushy. Instead:
- Blanch or Sauté First – Steam or lightly sauté mushrooms before freezing.
- Allow to Cool Completely – Prevents ice crystal formation.
- Store in a Freezer-Safe Bag or Container – Label with the date.
- Shelf Life: 10-12 months.
2. Dehydrating Mushrooms (Best for Long-Term Storage)
Dehydrated mushrooms last 1-2 years and are easy to rehydrate.
- Use a Food Dehydrator or oven at 130°F (55°C) for 6-8 hours.
- Store in an Airtight Glass Jar away from moisture.
- Rehydrate by soaking in warm water for 10-15 minutes before use.
3. Pickling Mushrooms
Pickling mushrooms extends their shelf life up to 6 months.
- Use a vinegar brine with spices and garlic.
- Store in the refrigerator for optimal freshness.
- Great for salads, antipasto, and snacking!
4. Making Mushroom Stock
If your mushrooms are starting to go bad, make homemade mushroom broth.
- Simmer mushrooms with garlic, onions, and herbs for a rich broth.
- Strain and store in jars in the fridge (5-7 days) or freezer (up to 6 months).
5. Creating Mushroom Gummies or Chocolates
For psilocybin or medicinal mushrooms, making gummies or chocolates is a fun way to preserve their potency.
6. Mushroom-Infused Honey
- Store mushrooms in honey for long-term preservation.
- Great for medicinal mushrooms like reishi or lion’s mane.
Final Thoughts: The Best Way to Keep Mushrooms Fresh
To maximize the shelf life of mushrooms: âś… Store in a paper bag in the fridge (4-7 days for whole mushrooms).
âś… Freeze, dehydrate, or pickle for long-term storage.
âś… Avoid plastic bags & washing before storage to prevent premature spoilage.
âś… Check for spoilage signs like sliminess, dark spots, and bad odor before use.
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FAQ
How long do mushrooms last in the fridge?
- Whole mushrooms last 4-7 days, while sliced mushrooms last 1-2 days in the refrigerator.
Can you freeze fresh mushrooms?
- Yes, but it's best to blanch or sauté them first to prevent texture changes.
What is the best way to store mushrooms in the fridge?
- Store them in a paper bag or porous container to allow airflow and prevent moisture buildup.
How do you know when mushrooms go bad?
- Sliminess, dark spots, wrinkling, and a sour smell are signs they should be discarded.