Can dried mushrooms go bad?

In this brief guide, we are going to answer the question” Can dried mushrooms go bad?” with an in-depth analysis of storing methods of mushrooms, moreover we are going to highlight the different methods of drying them.

Can dried mushrooms go bad?

Yes. dried mushrooms can go bad. Dried mushrooms don’t need refrigeration, and they can last for a long time. Using bad mushrooms can cause adverse reactions such as nausea, vomiting, chills, and headaches.

What is dried mushroom?

Dried mushroom is a type of fungi that have been preserved with the help of heat. Mushrooms can be dried in many ways like sun drying method, freeze-drying method. Another method is to use industrial machinery. It is used to rehydrate dried mushrooms at low temperatures for long periods. They can be rehydrated by soaking in water before using. 

When you talk about nutrition, mushrooms are the first food source that comes to your mind. They contain many vitamins and minerals.

Dried mushrooms add flavor and texture to soups, stews, and stir-fries. 

How to store mushrooms?

  • There are many popular varieties of mushrooms such as white, portabella, button, shiitake, enoki, and oyster. Keep them in low-temperature places. The far corner of the fridge is the best place to store them. 
  • Mushrooms are usually present in a plastic punnet or paper bag. This is the best method for packaging mushrooms. 
  • After opening the pack, cover it with a paper towel. It will keep them from drying out. It also prevents condensation. Condensation can happen if you transfer mushrooms from packaging to a sealed container. Some air circulation is necessary. 
  • If you are storing mushrooms, then try to keep them away from any type of strong flavors. Paper towels will not help you protect against these flavors. 
  • Cooked mushrooms can be stored in a sealed container or in a fridge too. 
  • Dried mushrooms can be stored at room temperature. Keep them away from sunlight and any moisture. 
  • After opening the packaging, transfer mushrooms to a frozen bag.

How to dry mushrooms?

If you want to store your mushrooms for a long time then dry them. 

There are different methods of drying them.

Sun-drying or air drying:

  • This is the simplest method of drying them. When you are drying them, then it will take 2 to 3 days. 
  • For this purpose, place mushrooms on clean sheets of paper towel on a flat surface. In this way, they can get airflow and some sunshine. 
  • The more sun they receive, the faster they will dry.
  • If the exposure to sunlight is higher, then this process will take less than 24 hours. So look after them when the temperature is high while drying.


If you don’t prefer the sun drying or air drying method, then you can dry them in a microwave oven. It will take 2 to 6 hours and will slowly warm them.


  • Place mushrooms on a tray with oven-safe paper.
  • Put this tray in the oven while it is not on.
  • After this, set the oven to 90 degrees celsius.
  • If the oven has a fan setting, then turn it on too. 
  • Keep them in the oven for 2 to 6 hours. Keep checking them to see how they are progressing. 

Food dehydrators:

Food dehydrators are known as the best method for drying mushrooms. For anyone who lives in moist rainy places, then dehydrators are the best alternative because you can’t use sun drying or air drying methods there.

Some people recommend that you turn off the heating mechanism of your food dehydrator as an added level of precaution. 

Epsom salt:

Salt is known as a natural dehydrator. It can be used as a desiccant to dry mushrooms. First of all, make desiccant with your salt and then use it in the drying procedure. 

The procedure of making the desiccant:

  • Fill a baking tray with Epsom salt.
  • Heat it to 400 degrees celsius.
  • Cook for 2 hours.
  • When you take the baking tray out, the set becomes a solid cake. Break up the solid cake immediately. Otherwise, it will cool down and you would face difficulty in breaking it. 
  • Place the broken pieces in a sealed jar.

The procedure of using the desiccant:

  • Cover the desiccant at the bottom of the jar with the help of a paper towel.
  • Use metal mesh to create a platform over a desiccant and paper towel to make a shelf for mushrooms.
  • Close the jar tightly, so that air can’t come inside or go outside.
  • Let it sit for several days.

Here, you can find how to use dried mushrooms to punch up everything from stocks to compound butter. 


In this brief guide, we answered the question” Can dried mushrooms go bad?” with an in-depth analysis of the method of storing mushrooms. Moreover, we discussed the methods of drying them.


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