
Mushrooms are a versatile ingredient with a short shelf life. Their high water content makes them susceptible to rotting or drying out if not stored properly. To keep mushrooms fresh, it is crucial to prevent them from releasing water and drawing in moisture from the air. Various methods can be employed, including storing them in paper bags, using paper towels, refrigeration, and even freezing or dehydrating them for extended preservation. The optimal approach depends on the desired storage duration and the initial quality of the mushrooms.
Characteristics of what helps keep mushrooms fresh
| Characteristics | Values |
|---|---|
| Storage | Store in a paper bag or bowl lined with paper towels |
| Temperature | Store in a refrigerator at 40–45 °F (4–7 °C) |
| Moisture | Avoid moisture by not washing mushrooms before storing |
| Airflow | Ensure good airflow to prevent mushrooms from spoiling |
| Freezing | Freeze cooked mushrooms for long-term storage |
| Dehydration | Dehydrate mushrooms for long-term storage |
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What You'll Learn

Store in a paper bag
Storing mushrooms in a paper bag is a great way to keep them fresh for longer. Mushrooms are highly perishable and have a short shelf life. They are quick to spoil because they have a high water content, which can lead to rotting or drying out if they are not stored properly.
Paper bags are a good option for storing mushrooms because they absorb any moisture released by the mushrooms, keeping their surfaces slime-free. This is in contrast to storing mushrooms in their original plastic supermarket packaging, which can trap moisture and contribute to quicker spoilage.
To store mushrooms in a paper bag, line a paper bag with a paper towel and place the mushrooms inside. This will help to absorb any excess moisture and keep the mushrooms dry. You can then fold the top of the bag over to seal it and place it in the refrigerator. It is recommended to store mushrooms at between 40-45 °F (4-7 °C), making the refrigerator the best place to keep them cool.
It is also important to note that mushrooms should not be washed before storing, as introducing added moisture will decrease their longevity. Instead, when you are ready to use the mushrooms, wipe any dirt off and then cook them as desired.
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Don't wash before storing
Mushrooms are a great addition to a variety of dishes, but they can be hard to keep fresh for long periods. This is because they contain a lot of moisture, which can lead to rotting or drying out if they are not stored properly.
When it comes to storing mushrooms, it is important to note that moisture is the number one enemy. Therefore, it is recommended to not wash mushrooms before storing them. Introducing added moisture will only decrease their longevity. Even if the mushrooms are dirty, it is best to leave them as they are and simply wipe off any dirt before cooking.
One effective method for storing mushrooms is to use a paper bag. Paper bags absorb any moisture released by the mushrooms, helping to keep their surface slime-free. If using this method, it is recommended to line the bag with a paper towel, which will also help to absorb moisture. Place the mushrooms in the bag and fold the top over to seal it.
Another option is to use a glass bowl lined with paper towels. Spread out the mushrooms on the paper towels and cover them with another layer of paper towels. This method allows for daily freshness checks and helps to keep the mushrooms dry.
It is worth noting that the original packaging of mushrooms is designed to breathe and is usually sufficient for short-term storage, typically up to three days. However, for longer storage, transferring the mushrooms to a paper bag or glass bowl is recommended.
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Keep in the fridge
Mushrooms are highly perishable, so storing them in the fridge is a great way to prolong their shelf life. The ideal temperature for storing mushrooms is between 40–45 °F (4–7 °C), which is usually within the range of a refrigerator.
If you plan to consume your mushrooms within a day or two of purchasing them, it is fine to keep them in their original packaging in the fridge. This packaging is designed to be breathable and durable for shipping. However, if you want to keep them for a week or more, it is recommended to transfer them to a paper bag lined with a paper towel. Paper bags are preferable to plastic containers as they absorb the moisture released by the mushrooms, preventing the growth of slime and spoilage.
One method for storing mushrooms in the fridge involves lining a large glass bowl with paper towels, spreading out the mushrooms, and covering them with another layer of paper towels. This allows for daily freshness checks, and the paper towels absorb excess moisture.
Another option is to wrap the mushrooms in a paper towel and place them in an open plastic bag in the fridge. The paper towel absorbs moisture, and the open bag allows for ventilation.
For long-term storage, you can consider freezing or drying your mushrooms. Freezing mushrooms involve lightly cooking them first, then placing them in a freezer-safe bag for up to 12 months. Drying mushrooms can be done using a dehydrator or air-drying, and the dried mushrooms are stored in an airtight glass jar.
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Freeze them
If you're unable to use mushrooms in recipes within a week, consider freezing them. Freezing mushrooms can keep them fresh for up to 12 months. However, fresher mushrooms tend to freeze better, so it's best to freeze them sooner rather than later.
Before freezing, the mushrooms must be cooked first to help preserve their quality and flavor. To do this, lightly sauté them in butter until just cooked, or steam them whole for 5 minutes (quartered or sliced mushrooms can be steamed for about 3 minutes). For improved color post-freezing, dip the mushrooms in a solution of 1 pint of water and 1 teaspoon of lemon juice before cooking, as recommended by the National Center for Home Food Preservation. Once the cooked mushrooms have cooled, place them in a freezer-safe bag and store them in the freezer.
It is important to note that freezing mushrooms may compromise their texture. Therefore, it is recommended to use thawed mushrooms to flavor stocks or chop them into veggie burgers, rather than trying to fry them.
Another long-term storage option is to dry the mushrooms. This can be done using a dehydrator or by air-drying, which involves placing the mushrooms in a mesh container with good airflow for about a week. Once completely dry, store them in an airtight glass jar.
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Use a dehydrator
Mushrooms have a high water content, which makes them quick to spoil. To extend their shelf life, you can dehydrate them. Dehydrated mushrooms are a great alternative to fresh mushrooms as they last longer and are packed with nutritional value. They can be stored in airtight containers for up to a year.
Step 1: Select Fresh Mushrooms
Start with fresh mushrooms. Do not try to dehydrate mushrooms that are already on their way to going bad. Signs of decomposition include slime, wrinkles, shrinkage, dark spots, and odour.
Step 2: Clean the Mushrooms
Wipe the mushrooms with a damp paper towel or use a mushroom brush followed by a quick rinse under cold running water. Make sure to clean them thoroughly and remove all dirt.
Step 3: Prepare the Mushrooms for Dehydration
Cut the mushrooms into slices or pieces. Sticking whole mushrooms or large caps into the dehydrator may result in incomplete dehydration due to the dense mass.
Step 4: Dehydrate the Mushrooms
Place the cleaned and sliced mushrooms in a food-grade dehydrator. Set the temperature and drying time according to the instructions of your dehydrator. The typical drying time is around 8-10 hours.
Step 5: Condition the Mushrooms
Once the mushrooms are dehydrated, place them loosely in a large glass or plastic container about two-thirds full. Lightly cover the container and store it in a dry, well-ventilated place for 4 to 10 days. Stir or shake the container daily to separate the pieces.
Step 6: Store the Mushrooms
After conditioning, transfer the dried mushrooms to moisture-proof containers or bags. Label the packages with the product name, date, and drying method. Store them in a cool, dry, and dark place, such as a pantry or cupboard. Properly stored, dehydrated mushrooms can last for 6 to 12 months.
Using Dehydrated Mushrooms:
To use dehydrated mushrooms, pour boiling water over them and let them soak for 20 to 30 minutes. The soaking liquid can be saved for adding flavour to soups and sauces. Use the rehydrated mushrooms as you would use fresh mushrooms in your recipes.
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Frequently asked questions
Mushrooms should be stored in a brown paper bag with a paper towel to absorb any excess moisture.
Mushrooms should be stored at between 40–45 °F (4–7 °C). The refrigerator is the best place to store mushrooms at this temperature.
Fresh mushrooms last in the refrigerator for between seven and 14 days.
Yes, you can freeze mushrooms. It is recommended to cook them first by lightly sautéing them in butter or steaming them. Once cooled, place them in a freezer bag and store them in the freezer for up to 12 months.

























