
Mushrooms are a versatile ingredient that can be cooked in a variety of ways, including sautéing, boiling, and frying. When cooking mushrooms, how do you know when they are done? One way to tell is by texture. Mushrooms are cooked when they are soft and easy to pierce with a fork. As a general rule, mushrooms should be cooked at 170°F to ensure that they are safe to eat. However, cooking time will depend on the variety of mushroom, with some types, such as honey mushrooms, retaining a rubbery texture even after prolonged cooking. Additionally, the method of cooking and the desired texture will also impact the cooking time. To ensure optimal freshness and taste, it is recommended to cook and consume mushrooms when they are fresh, as freezing or washing them beforehand can affect their nutritional value and texture.
| Characteristics | Values |
|---|---|
| Texture | Mushrooms should be soft to the touch and easy to pierce with a fork when done |
| Sliminess | Mushrooms are done when they are not slimy or sticky |
| Smell | Mushrooms should not smell fishy or sour when done |
| Colour | Mushrooms are done when they are not discoloured or darker than usual |
| Storage | Raw mushrooms can last 4-10 days in the fridge, depending on the variety and whether they are whole or sliced |
| Temperature | Mushrooms should be cooked at 170°F to break down cell walls and release nutrients |
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What You'll Learn

Mushrooms should be soft and pierceable
Mushrooms are done cooking when they are soft and pierceable. This means that a fork can easily pass through them without resistance. Depending on the type of mushroom, this could take between 15 and 25 minutes in a pan on high heat. However, it's important to note that some mushrooms, like honey mushrooms, may remain rubbery even after a long cooking time.
To ensure that your mushrooms are cooked properly, it is recommended to cook them at a temperature of 170°Fahrenheit. This temperature is believed to be the standard safe temperature for cooking mushrooms, as it is high enough to break down the cell walls and release their nutrients. Mushrooms have a high water content, so cooking them at this temperature will help to ensure that they are cooked through and not just warmed up.
It is worth noting that the cooking time and texture of mushrooms can vary depending on their thickness and texture. For example, rehydrating dried mushrooms may take longer than cooking fresh mushrooms. Additionally, some mushrooms may need to be cooked thoroughly, while others can be eaten semi-cooked without any issues.
When cooking mushrooms, it is important to avoid overcooking them. While some sources claim that mushrooms cannot be overcooked, others suggest that boiling them can turn them into sponges. Therefore, it is recommended to cook mushrooms on high heat for a shorter amount of time to retain their texture and flavour.
To check if mushrooms are done, it is best to rely on a combination of visual and tactile cues. Firstly, look for a change in texture from firm and plump to soft and pierceable. Then, use a fork to gently probe the mushrooms to ensure they are soft and cooked through. By using both your eyes and touch, you can ensure that your mushrooms are cooked perfectly.
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Boiling mushrooms is not recommended
Mushrooms are done when they are tender and all the water has evaporated from the pan. However, boiling mushrooms is not recommended.
Boiling mushrooms can make them soggy and slimy, which is unappetizing. Mushrooms are delicate and boiling can cause them to lose their shape and texture, becoming mushy and unappealing. Additionally, boiling can leech out the flavour and nutrients, resulting in bland and less nutritious mushrooms.
Furthermore, boiling mushrooms can be time-consuming and inefficient. It involves boiling a large amount of water, which then needs to be evaporated, adding to the cooking time. This extra step is unnecessary as there are faster and more effective ways to cook mushrooms.
Sautéing or stir-frying are recommended methods for cooking mushrooms. These techniques allow the mushrooms to brown evenly and develop a rich flavour without becoming soggy. Grilling or roasting mushrooms is also a good option, as it adds a charred flavour and keeps the mushrooms firm and intact.
When cooking mushrooms, it is important to avoid overcrowding the pan. Mushrooms have a high water content, and if they are too close together, they will steam instead of browning. It is also important to note that mushrooms should not be slimy before cooking. This indicates that they are past their prime and may have lost their flavour and nutritional value.
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Store mushrooms in a paper bag in the fridge
Mushrooms are a versatile ingredient, adding an earthy, umami-rich flavour to dishes. However, they have a short shelf life, so proper storage is key. Mushrooms are quick to spoil due to their high moisture content. To keep them fresh for longer, it is important to store them in a dry, well-ventilated environment.
Storing mushrooms in a paper bag in the fridge is an effective way to keep them fresh. The paper bag absorbs excess moisture, preventing the mushrooms from becoming slimy and preserving their flavour. This method is preferred by food writer Harold McGee, who recommends using a brown paper bag, folded over at the top, to keep mushrooms dry.
For added protection against moisture, some sources suggest lining the paper bag with a paper towel. The paper towel draws moisture away from the mushrooms, helping them to last longer. This combination of a paper bag and paper towel can keep mushrooms fresh for up to 10 days, although some recommend not eating fresh mushrooms after 10 days of buying them. It is also important to avoid storing mushrooms in the crisper drawer, as this is designed to be humid, which is not ideal for mushrooms. Instead, they should be kept on the bottom shelf of the fridge.
It is best to avoid washing mushrooms before storing them, as this can impact their shelf life. It is also important to avoid plastic containers or bags with no holes, as these can trap moisture and speed up spoilage.
When checking if mushrooms are done, look out for signs of spoilage, such as a slimy texture, an unpleasant odour, or the growth of mould. Fresh mushrooms should be dry, firm, and smooth, with a pleasantly earthy smell.
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Raw mushrooms last up to 10 days in the fridge
The shelf life of mushrooms depends on the type of mushroom and how they are stored. Raw mushrooms stored in a paper bag or wrapped in a clean towel in the refrigerator typically last between one and two weeks. This method of storage allows airflow and prevents excess moisture buildup, which can cause spoilage.
To further extend the shelf life of raw mushrooms, they can be frozen or canned. Frozen mushrooms retain their quality for 9-12 months and can be frozen whole or in large slices. Canned mushrooms can be stored for up to a year unopened.
When determining if raw mushrooms are still good to eat, it is important to look for signs of spoilage. Mushrooms that are slimy, smelly, or mouldy should not be consumed as they may contain bacteria that can cause illness. Additionally, mushrooms with bruises, dark spots, or discolouration may be starting to go bad. Fresh mushrooms should appear dry, firm, and smooth with a pleasantly earthy smell.
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Mushrooms can be frozen for later use
Mushrooms can be stored in the refrigerator for up to 10 days, but they will start to go bad after a few days. You can tell if a mushroom has gone bad if it has a slimy texture, or if it has bruises or dark spots. Bad mushrooms may also smell fishy or sour.
To avoid wasting mushrooms, you can freeze them for later use. Freezing mushrooms is a helpful technique to extend the time you have to use them and can also reduce food waste. The best way to freeze mushrooms is to cook them first to preserve their flavour and texture. Mushrooms contain a lot of water, so defrosted raw mushrooms will be mushy and may have an unpleasant texture.
To freeze your mushrooms, start by slicing them into similar-sized portions so they cook and freeze evenly. You can then sauté or steam them. After cooking, place the pieces onto a parchment paper-lined baking sheet and put them in the freezer for about an hour, or until they feel hard. Then, use a spatula to remove them from the sheet and put them into freezer bags. Frozen cooked mushrooms can last up to nine months in the freezer.
If you decide to freeze raw mushrooms, slice them into uniform pieces and flash-freeze them before packing them into bags. Raw mushrooms will last up to six months in the freezer. Frozen mushrooms, whether raw or cooked, are best served cooked.
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Frequently asked questions
Fresh mushrooms are dry, firm, and smooth with a pleasantly earthy smell. Bad mushrooms may be slimy, sticky, wrinkled, or shrivelled, and have brown spots or discolouration. They may also grow mould or develop an unpleasant, fishy odour.
Store mushrooms in a way that allows them some air without drying them out. Keeping them in a paper bag with the top loosely rolled inside the refrigerator is a popular storage method. You can also use plastic bags lined with paper towels to help capture moisture, but be sure to change the towels regularly.
Mushrooms are about 90% water, so they cook quickly. Sautéed mushrooms are done when they are easy to pierce with a fork and soft to the touch, which should take about 15-25 minutes in a pan. If you want to brown or caramelise your mushrooms, cook them on medium-high heat for about 10 minutes, or until most of the water cooks off.
It is hard to overcook mushrooms. In fact, one source says that, in terms of molecular structure, you can't overcook them. However, another source says that honey mushrooms can remain rubbery even after extended cooking times.

























