
Mushrooms are a versatile ingredient with a meaty texture and umami flavor. However, they are perishable and require proper storage to stay fresh. Fresh mushrooms can be stored in a refrigerator, either in a paper bag or wrapped in a paper towel, to absorb moisture and prevent spoilage. Sliced mushrooms should be stored in an airtight container and consumed within three days. Freezing and drying are also effective long-term storage methods. Dried mushrooms can be rehydrated by soaking them in water, and this process can be expedited using hot water. The soaking liquid can be saved and used in stocks or sauces, adding flavor to various dishes. Additionally, proper cleaning techniques, such as washing and brushing, are essential to ensure the removal of dirt and grit from mushrooms.
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What You'll Learn

How to store mushrooms in the refrigerator
Mushrooms are a versatile ingredient, but they are delicate and perishable. The best place to store mushrooms is in the refrigerator, but which spot you choose impacts preservation. Here is how to store mushrooms in the refrigerator to keep them fresh and slime-free:
Firstly, do not wash mushrooms before storing them. Mushrooms have a high water content, and moisture is the number one enemy when it comes to keeping mushrooms fresh. Mushrooms will release water as they age, so storing them in a paper bag will help absorb this moisture and keep the mushrooms fresh for longer. If you don't have a paper bag, you can wrap the mushrooms in a paper towel and place them in a bowl in the refrigerator. Avoid plastic containers, as these will trap moisture and speed up spoilage.
If you have bought loose mushrooms, it is best to store them in a paper bag in the refrigerator. If you have bought pre-sliced mushrooms, it is best to store them in an airtight container in the refrigerator. Sliced mushrooms should be used within three days, whereas whole mushrooms should be used within a week.
If you are unable to use mushrooms within a week, you can freeze them. To do this, lightly sauté or steam the mushrooms before placing them in a freezer-safe bag. Frozen mushrooms will last up to 12 months, but fresher mushrooms tend to freeze better, so it is best to freeze them sooner rather than later.
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Soaking and rinsing dried mushrooms
Dried mushrooms are a versatile ingredient that can be used in soups, stews, sauces, stir-fries, and more. They can be soaked and rinsed before being added to a dish. Here is a step-by-step guide to soaking and rinsing dried mushrooms:
Step 1: Measure the Mushrooms
Weigh the dried mushrooms and place them in a bowl. Most recipes call for dried mushrooms to be measured by weight. The amount of mushrooms you use will depend on the dish you are preparing and the desired intensity of mushroom flavor. As a general rule, plan on using 3-4 ounces of dried mushrooms for every pound of fresh mushrooms required in a recipe.
Step 2: Soak the Mushrooms
Cover the mushrooms generously with water. The water temperature can vary depending on the type of mushroom and your time constraints. Room temperature water is recommended by some as it extracts less flavor from the mushrooms, resulting in a more intense mushroom taste. However, hot or warm water can be used, especially for thicker mushrooms or when you are in a hurry. Soaking times will vary depending on the size and thickness of the mushrooms. Thinly sliced mushrooms will typically rehydrate in 20 to 30 minutes, while thicker or whole cap mushrooms may take longer. You can expedite the process by using hot water. An alternative method is to use a French press, which helps keep the mushrooms submerged.
Step 3: Rinse the Mushrooms
Once the mushrooms have softened, remove them from the soaking liquid. Taste a mushroom, and if you detect any grittiness, rinse them under running water to remove any residual grit. Some people skip this step, believing that rinsing washes away flavor, but rinsing ensures the removal of any stubborn grit.
Step 4: Prepare the Mushrooms for Cooking
After rinsing, the mushrooms should be cooked. You can sauté them, simmer them in a liquid, or use them in your favorite recipe. If time permits, it is best to use the mushrooms immediately after rehydrating, as this is when they are at their best. However, you can store rehydrated mushrooms in an airtight container in the refrigerator for 1-2 days.
Additional Tips:
- The liquid used to rehydrate the mushrooms can be saved and stored in an airtight container in the refrigerator for 4-6 days. This liquid has an earthy, umami flavor that can enhance your dishes.
- When purchasing dried mushrooms, look for a reputable brand with minimal grit. Cheap and low-grade mushrooms tend to have more grit, which can be difficult to remove.
- Dried mushrooms should be stored in a dark, cool place, such as a pantry, and will retain their full flavor for 6-12 months.
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Rehydrating mushrooms with a French press
Dried mushrooms are a versatile ingredient that can be used in a variety of dishes, from pasta to stir-fries and roasted meats. They also have a longer shelf life than fresh mushrooms and can be stored in a cool, dry pantry or freezer. Rehydrating dried mushrooms is a simple process that can be done using a French press.
To rehydrate mushrooms with a French press, start by placing your dried mushrooms into the carafe of the French press. Then, pour hot water over the mushrooms until they are fully submerged. You may need to gently press down on the lid to keep them submerged. Let the mushrooms soak for 10 to 30 minutes, depending on the type of mushroom and your desired texture.
Once the mushrooms have soaked for the desired amount of time, slowly push down on the plunger to separate the mushrooms from the liquid. If you'd like, you can gently press down on the mushrooms to extract a little more flavor into the liquid. Be careful not to crush them.
The mushroom-infused liquid can be strained and reserved for use in stocks, sauces, or mushroom risotto. The rehydrated mushrooms can be tossed into ramen, stir-fried with rice, or used in place of fresh mushrooms in any recipe.
By using a French press to rehydrate mushrooms, you can easily keep the mushrooms submerged and extract maximum flavor from them. This method is a convenient and efficient way to prepare dried mushrooms for various culinary applications.
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Removing grit from mushrooms
Firstly, it is important to source your mushrooms from a reliable brand or supplier. Cheap and low-grade mushrooms tend to have more grit, and the amount and quality can vary depending on the manufacturer. Price is often a good indicator of quality, with pricier mushrooms typically having less grit.
Before storing or cooking mushrooms, it is essential to avoid washing them, as this will shorten their shelf life. Instead, use a brush or a paper towel to gently remove any visible dirt or grit from the mushroom's surface. If the mushrooms have stems, you can twist and pull them out to check for any grit or tiny bugs that may be hiding inside.
When you are ready to cook the mushrooms, start by de-stemming them if necessary. Soaking the mushrooms in water is an effective way to remove grit. You can use room temperature, warm, or hot water, depending on the thickness of the mushrooms and your time constraints. Thinly sliced or dried mushrooms will soften in room temperature water, while thickly sliced or capped mushrooms may require hot water if you are in a hurry. Soak the mushrooms for 15-30 minutes, and use a bowl or pot large enough to fully submerge them. You may need to weigh them down with a small plate or saucer to keep them submerged.
After soaking, some people recommend rinsing the mushrooms under running water to remove any remaining grit. Others believe that rinsing washes away flavour, so this step is a matter of personal preference. If you are concerned about grit but want to preserve as much flavour as possible, you can gently pat the mushrooms dry with a clean kitchen towel and carefully inspect them for any remaining grit or dirt. If you find any, use a brush to remove it, taking care not to damage the delicate mushroom caps.
By following these steps, you can effectively remove grit from mushrooms and ensure a pleasant dining experience.
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Regrowing mushrooms from a Grow Block
To regrow mushrooms from a grow block, the first step is to harvest your first crop of mushrooms. Remove any dried or smaller mushrooms with inverted caps, as they will dry up and possibly contaminate the rest. Next, take the grow block out of its packaging and submerge it in cool tap water for 3 to 4 hours. You may need to weigh it down, as the blocks tend to float. While it's soaking, rinse out the bag and prepare to place the grow block back in. The purpose of placing the grow block back into the plastic bag is to provide minimal areas for exposure to fresh air and to focus on growing bigger mushrooms. Alternatively, you can leave the plastic bag off and allow mushrooms to grow out from all over the grow block.
After 3 to 4 hours, place the grow block back into your fruiting chamber or previous mushroom fruiting setup. It is recommended to use non-chlorinated water, as this provides much-needed moisture to the mycelium and the substrate material. Even though we regularly water or mist the mushroom grow block, it dries out over time, and when we complete our first harvest, we remove a lot of water from the mycelium, as mushrooms are mostly water.
If the mushroom mycelium looks shrivelled, place the grow block back inside a clean bag and allow the mushroom mycelium to regrow. Once the mycelium block starts forming primordial or pin formations, you can replace the mushroom block back into your fruiting chamber.
To encourage more fruitings, you can move your kit outdoors, as a change in environment or temperature shift can sometimes be a cue for fungi to produce more mushrooms. Additionally, if you are feeling creative, you can use your spray and grow kit to inoculate some containers. You will need something for the fungi to grow on and eat, known as a substrate. Chopped straw is ideal because of its smaller particle size, making it easier for the mycelium to spread.
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Frequently asked questions
If you are refreshing dried mushrooms, you can soak them in warm water for 20-30 minutes. If you are in a hurry, you can use hot water and soak them for 15 minutes. If you are refreshing mushrooms that have been harvested, you can submerge the Grow Block in cool tap water for 3 to 4 hours.
Mushrooms should be kept dry and stored in a paper bag in the refrigerator. They can also be wrapped in a paper towel and placed in a bowl in the refrigerator.
Mushrooms can be cleaned by de-stemming them and then dunking them in a large bowl of water. They should then be laid on a cotton dish towel and patted dry.

























