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  • Writer's pictureThe Wild Foodie

Drying Mushrooms: How to unlock Nature's Umami Treasure

Updated: Jan 21

Mushrooms, with their earthy aroma and rich, savoury flavour, have long been celebrated as a culinary delicacy. They are a versatile ingredient that can elevate the taste of countless dishes, from hearty stews to gourmet pastas. However, their fleeting freshness often leaves us yearning for more. Enter the art of drying mushrooms, a time-honoured technique that transforms these fungi into a flavour powerhouse that can be enjoyed year-round. Whether you're a forager, a gourmet cook, or simply someone eager to preserve the essence of mushrooms in their prime, drying offers an opportunity to unlock and intensify the umami-rich depths of these incredible gifts from nature. In this exploration of drying mushrooms, we will delve into the captivating world of wild foraging and the careful preparation of shop-bought varieties, uncovering the secrets of preserving their unique flavours and textures. Join us on a journey that reveals the intricacies of drying mushrooms, a culinary craft that allows you to savour the essence of mushrooms long after the seasons have changed. So let’s get into it..


How to dry mushrooms
How to dry mushrooms

How to Dry Mushrooms: Drying Shop-bought and Wild Mushrooms


Choosing Mushrooms for Drying


Wild Mushrooms:

  • Mushroom Identification: Before setting out to forage wild mushrooms, immerse yourself in the study of field guides and local expert advice. Learn to identify not only edible species but also toxic look-alikes.

  • Choosing Suitable Types: Wild mushrooms with robust flavours and firm textures, like porcini, chanterelles, morels, field, parasol and blewits, are particularly suitable for drying.

  • Microclimates: Understand the specific microclimates where different mushroom species thrive. Factors like soil type, temperature, and humidity play a crucial role in their growth.

  • Seasonal Variation: Different mushroom species appear at distinct times of the year. Knowing their seasonal patterns is essential for successful foraging.

Find out what wild food is in season with our UK Foraging Calendar.


Shop-Bought Mushrooms:

  • Varieties: Explore the wide array of cultivated mushrooms available in shops, including shiitake, oyster, chestnut, white and more. Each variety offers unique flavours and textures.

  • Quality Assessment: Choose mushrooms that are firm, free of blemishes, and with unopened caps. Avoid any signs of spoilage, like slime or off-putting odours.

  • Local Sourcing: Whenever possible, opt for locally grown mushrooms to support regional agriculture and reduce your carbon footprint.

Preparing Your Mushrooms


Cleaning Wild Mushrooms:

  • Tools for Cleaning: Use a soft brush, mushroom knife, or even a small, clean paintbrush to gently remove soil and debris. Avoid using water as wild mushrooms are porous and can absorb it, leading to a loss of flavour and texture.

  • Inspecting for Insects: Examine each mushroom carefully for signs of insects or larvae. Remove any affected parts but remember that a few insect nibbles are often harmless and may add authenticity to your foraged harvest.

Cleaning Shop-Bought Mushrooms:

  • Dry Cleaning: Shop-bought mushrooms can be gently wiped with a damp cloth or paper towel. Avoid soaking them to prevent moisture absorption and sogginess.

  • Trimming and Discolouration: Cut away any discoloured or slimy portions. Trim the stem ends if they appear dry or tough.

Treat yourself. Click the link to see our selection of high quality mushroom knives.


Slicing and Dicing your Mushrooms


Slicing for Wild Mushrooms:

  • Uniformity: Achieving consistent thickness in your slices is essential for even drying. A mandolin or sharp knife can help achieve the desired thinness.

  • Handling Mushrooms: Wild mushrooms can be delicate; handle them with care to avoid bruising or breaking.

Slicing for Shop-Bought Mushrooms:

  • Thickness: Depending on your preference, you can adjust the thickness of slices. Thinner slices will dry faster but may become brittle, while thicker slices retain more texture.

  • Slicing Techniques: Consider various slicing techniques like julienne, thick strips, or coin-shaped slices depending on your intended use.


Sliced wild mushrooms ready for drying
Sliced wild mushrooms ready for drying

Pre-Treatment (optional see below)


Blanching Mushrooms:

  • Purpose: Blanching helps to preserve the colour, texture, and flavour of mushrooms while also deactivating enzymes that can lead to spoilage.

  • Blanching Time: The blanching time can vary based on the type of mushroom and its thickness. It's generally between 1 to 2 minutes for most varieties.

  • Ice Bath: Quickly transferring blanched mushrooms to an ice bath halts the cooking process, preserving their crispness.

Choosing a Drying Method


Sun Drying:

  • Prerequisites: Sun drying is highly dependent on the weather, requiring consistently sunny and dry conditions. Ideal for regions with low humidity.

  • Equipment: Use clean trays or screens to arrange mushroom slices. Cover them with fine mesh or cheesecloth to protect from insects and debris.

  • Turning: Rotate the trays periodically to ensure even drying. This method can take several days to complete.

Oven Drying:

  • Temperature and Airflow: Set your oven to the lowest possible temperature, usually around 60°C (140°F), and keep the oven door slightly ajar to allow moisture to escape.

  • Rack Placement: Place mushroom slices on wire racks or parchment paper, ensuring good air circulation. Use the convection setting if available for better results.

  • Monitoring: Keep a close eye on the drying progress, as oven drying can be quicker than other methods. Check and flip slices as needed.

Dehydrator:

  • Precise Control: Electric food dehydrators provide excellent control over temperature and airflow. Consult your dehydrator's user manual for optimal settings for mushrooms.

  • Tray Placement: Arrange mushroom slices on dehydrator trays, leaving space between each piece for proper air circulation.

  • Efficiency: Dehydrators are energy-efficient and offer consistent results. They are particularly useful for those who frequently dry foods.

Looking for a great value dehydrator? Click the link to see the best Mushroom Dehydrators here.


Monitoring the Drying Process

  • Time Variability: Drying times can vary significantly depending on the method, mushroom type, and thickness. Be patient and vigilant in monitoring the progress.

  • Testing for Dryness: Test a few slices from different parts of the batch. They should be crisp, brittle, and free from moisture. Over-dried mushrooms become too brittle.


How long does it take to dry wild mushrooms?


The time it takes to dry wild mushrooms can vary significantly based on several factors, including the type of mushrooms, the drying method used, and the environmental conditions. Here are some general guidelines for different drying methods:

  1. Sun Drying: Sun drying is the slowest method and can take several days to complete. The drying time will depend on the intensity of the sun, humidity levels, and the thickness of the mushroom slices. In some cases, it may take up to a week or more to fully dry wild mushrooms using this method.

  2. Oven Drying: Drying wild mushrooms in an oven set to the lowest possible temperature, usually around 60°C (140°F), can take several hours. Thinner slices will dry faster than thicker ones. It may take anywhere from 2 to 6 hours or more to fully dry mushrooms in the oven.

  3. Dehydrator: Using an electric food dehydrator is generally the quickest and most consistent method. The drying time in a dehydrator can range from 4 to 12 hours, depending on factors like the type of mushrooms, their thickness, and the specific dehydrator settings used.

  4. Air Drying: Hanging mushrooms to air dry in a well-ventilated area can take longer than other methods, often about a week or more. Again, the drying time will depend on the environmental conditions, including humidity and airflow.

It's important to monitor the drying process closely regardless of the method you choose. Wild mushrooms are ready when they become completely dry, crisp, and brittle. Over-drying can make them too brittle and may affect their flavour. Properly dried wild mushrooms should break easily when bent.


Remember that the exact drying time can vary, so it's crucial to check the mushrooms regularly to ensure they are dried to your desired level of crispness and are free from any residual moisture.


Grow your own varieties of wild mushrooms with our mushroom growing kits.


Can you dry mushrooms whole?


Yes, you can dry mushrooms whole, but it may take longer for them to dehydrate thoroughly, and they may develop a tougher texture compared to sliced or chopped mushrooms.


Do you need to cook mushrooms before dehydrating?


Blanching mushrooms before dehydrating is not mandatory but is often recommended as it helps inactivate enzymes that can cause browning and deterioration during drying, preserves the mushrooms' colour, flavour, and texture, and enhances safety by reducing the risk of foodborne illness, particularly with wild mushrooms. To blanch mushrooms, gently clean them, briefly immerse them in boiling water for 1-2 minutes, and then immediately transfer them to an ice bath to halt the cooking process. After blanching, drain and pat them dry before proceeding with your chosen drying method, ensuring that your dried mushrooms maintain their quality and have an extended shelf life.


How to use dried mushrooms
How to use dried mushrooms

How long do dried mushrooms last?


Dried wild mushrooms can have a long shelf life when stored properly. When stored in an airtight container or vacuum-sealed bag in a cool, dark place away from moisture and direct sunlight, dried wild mushrooms can typically last for up to 1 to 2 years or even longer. The key to preserving their quality and flavour over time is to ensure they remain dry and free from moisture, which can cause them to degrade or become vulnerable to mould. Regularly check for any signs of moisture or spoilage, and discard any mushrooms that show such signs. Properly stored dried wild mushrooms can be a valuable addition to your pantry, providing rich, earthy flavours to your culinary creations for an extended period.


Click the link to see the very best Mushroom Foraging Books.


Do dried mushrooms taste as good as fresh?


Dried mushrooms have a distinct and concentrated flavour that many people find highly appealing, but they don't taste exactly the same as fresh mushrooms. The drying process intensifies the mushroom's flavour, particularly its umami qualities, making dried mushrooms prized for their rich and earthy taste. This concentrated flavour can add depth and complexity to dishes, especially soups, stews, and sauces.


However, the texture of dried mushrooms differs significantly from fresh ones. Dried mushrooms become somewhat chewy and rehydrated when used in cooking, while fresh mushrooms are soft and moist. Some people prefer the chewy texture of rehydrated mushrooms, while others may find it less appealing than the tenderness of fresh mushrooms.


The choice between dried and fresh mushrooms often depends on the specific culinary application. Dried mushrooms are excellent for adding intense mushroom flavour to dishes where texture isn't a primary concern, such as stocks, broths, and sauces. Fresh mushrooms, on the other hand, are preferred when you want their distinct texture to shine in salads, sautés, or as a topping for pizzas.


In summary, while dried mushrooms offer a unique and robust flavour profile, they are not a direct substitute for fresh mushrooms due to the difference in texture. The choice between the two depends on your culinary goals and the specific dish you're preparing. Many chefs and home cooks appreciate both dried and fresh mushrooms for their individual qualities and versatility in the kitchen.



How do you store dried wild mushrooms?


To store dried wild mushrooms effectively, place them in an airtight container or vacuum-sealed bag, safeguarding them from moisture and light, and store them in a cool, dark place, like a pantry. Be vigilant in checking for any signs of moisture inside the container, as dried mushrooms are prone to absorbing humidity, which could lead to spoilage or mould growth. Label the storage container with the mushroom type and drying date to help monitor freshness. While properly stored dried wild mushrooms can last up to a year or longer, it's advisable to use them within this timeframe to preserve their optimal flavour and quality. By adhering to these storage practices, you can savour the intense and rich flavours of dried wild mushrooms in your culinary creations while ensuring their lasting freshness and quality.


Seal in the freshness with these reusable glass jars and bottles.


How to rehydrate dried mushrooms


To rehydrate dried mushrooms, select the desired quantity and gently clean them if necessary to remove any remaining debris. Place the dried mushrooms in a bowl and cover them with warm water, preferably not boiling. Allow them to soak for approximately 20-30 minutes or until they become pliable and have reabsorbed moisture, expanding to their original, plump state. Once rehydrated, drain the mushrooms and use them in your favourite recipes.


Mushroom'y Liquid Gold


Rehydrating dried mushrooms is a culinary adventure that not only revives the fungi's delightful texture but also yields a precious elixir known as "liquid gold." As the dried mushrooms soak in warm water, they release a rich and intensely flavoured broth that captures the very essence of these fungi. This mushroom-infused soaking liquid is a treasure trove of umami, and it should not go to waste. Once you've rehydrated your mushrooms, don't forget to save this liquid gold – it's a valuable addition to your culinary repertoire. Use it to enhance the flavour of your dishes, such as soups, stews, risottos, and sauces.


Dried mushroom stock or liquid gold
Dried mushroom stock 'liquid gold'

Tip: Don't forget that any leftover soaking liquid from rehydrating dried mushrooms can be frozen in ice cube trays, providing a valuable mushroom-infused liquid for enhancing the flavour of soups, stews, and sauces. Pour it into ice cube trays and freeze it for later use, ensuring that no drop of this precious essence is lost. With each cube, you'll unlock a world of depth and richness in your cooking, reminding you of the magic that mushrooms can bring to your table. So, savour the liquid gold and elevate your culinary creations to new heights of flavour and aroma.


Get more wild food recipes by checking out our selection of Forager Cookbooks.


What can I do with dried mushrooms?


Dried mushrooms are a versatile and delicious ingredient that can enhance a wide range of dishes. Here are some creative culinary uses and yummy ways to use dried mushrooms:

  1. Mushroom Broth: Rehydrate dried mushrooms by soaking them in warm water, and then use the soaking liquid as a base for a rich mushroom broth. Add it to soups, risottos, or sauces for an intense umami flavour.

  2. Mushroom Risotto: Alongside fried fresh mushrooms, add rehydrated and chopped dried mushrooms to your risotto for a deep and earthy flavour. The soaking liquid can also be used to enhance the dish.

  3. Mushroom Sauce: Create a decadent mushroom sauce for pasta, steak, or poultry by frying rehydrated and sliced dried mushrooms with garlic, shallots, and herbs. Deglaze the pan with white wine and finish with cream or butter.

  4. Mushroom Stuffing: Incorporate rehydrated and finely chopped dried mushrooms into your stuffing recipes for a savoury twist on classic holiday dishes.

  5. Mushroom Pâté: Blend rehydrated dried mushrooms with garlic, herbs, cream cheese, and a touch of lemon juice to create a delicious mushroom pâté or spread for crackers and bread.

  6. Mushroom Gravy: Add depth and richness to your gravy by incorporating rehydrated dried mushrooms and their soaking liquid into the recipe. This works wonderfully with roast meats and mashed potatoes.

  7. Mushroom Rissoles or Patties: Combine rehydrated and finely chopped dried mushrooms with breadcrumbs, herbs, and seasonings to make mushroom rissoles or patties that can be fried or baked.

  8. Mushroom Omelette: Fry rehydrated dried mushrooms and onions to use as a filling for omelettes or scrambled eggs. The intense mushroom flavour will elevate your breakfast.

  9. Mushroom Pizza: Add rehydrated and sliced dried mushrooms as a topping for homemade or shop-bought pizzas to infuse them with a rich umami taste.

  10. Mushroom Stir-Fry: Rehydrated mushrooms are perfect for stir-fry dishes. Fry them with fresh vegetables and your choice of protein for a delicious, umami-packed meal.

  11. Mushroom Risotto Balls: Roll leftover mushroom risotto into balls, stuff them with cheese or other fillings, and coat them in breadcrumbs before frying or baking.

  12. Mushroom Dips: Blend rehydrated dried mushrooms with sour cream or Greek yoghurt, along with seasonings, to create a creamy and savoury dip for vegetables or chips.

  13. Mushroom and Spinach Lasagne: Layer rehydrated mushrooms with spinach and cheese in your lasagne for a hearty and delicious vegetarian option.

These are just a few ideas to get you started, but the possibilities with dried mushrooms are virtually limitless. Experiment in your kitchen to discover new ways to incorporate their robust and earthy flavour into your favourite dishes.


Summing Up


In the realm of culinary magic, where ingredients transform into masterpieces, dried mushrooms stand as a treasure trove of umami-rich flavours. Through the meticulous process of drying, we have unveiled the secret to capturing the essence of these fungi, preserving their earthy aroma and savoury taste for moments that extend far beyond their seasonal splendour. From the wilds of nature to the aisles of your local market, the art of drying mushrooms empowers you to create culinary wonders that are both timeless and tantalising.


Whether you're crafting a hearty soup to warm your soul, a delicate risotto to impress guests, or a simple yet sublime mushroom-infused sauce, the dried mushrooms in your pantry hold the key to elevating your dishes to new heights. As we conclude this exploration, remember that the journey doesn't end here; it continues in your kitchen, where you wield the power to transform these humble fungi into culinary masterpieces. So, embrace the world of drying mushrooms, and let their rich, intense flavours inspire your culinary adventures throughout the seasons.


By mastering the intricacies of drying mushrooms, you embark on a culinary journey that celebrates the natural flavours and textures of these remarkable fungi. Whether you are foraging for wild mushrooms in the forest or selecting the finest shop-bought specimens, the process of drying mushrooms opens up a world of culinary possibilities, ensuring you can savour their exquisite flavours throughout the year. With patience, careful preparation, and an understanding of the unique qualities of each mushroom, you can elevate your dishes to new heights of umami-rich deliciousness.


Have you visited our Shop? Get the very best books and foraging gear, grow your own wild food and learn to preserve it like a pro. Visit our Wild Food and Foraging Shop now.



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