
Mushrooms are a versatile ingredient that can be used in soups, stir-fries, and pasta dishes. Before cooking mushrooms, it is important to clean and trim them. The best way to clean mushrooms is to wipe them with a damp paper towel to remove any dirt and debris. Mushrooms can also be washed in cold running water and dried in a salad spinner, but they will absorb some water, which will increase cooking time. When trimming mushrooms, you can either cut the stems or pull them out with your fingers. It is important to remove any dried-out or woody parts of the stem, as well as the gills under the cap. The trimmed mushrooms can then be sliced, quartered, or chopped to the desired size.
Characteristics and Values table for trimming mushrooms:
| Characteristics | Values |
|---|---|
| Types of mushrooms to trim | Button/white, cremini/baby bella, king trumpet/oyster, Lion’s mane, shiitake, chanterelle, portobello |
| Parts to trim | Woody or dried-out pieces of stems, entire stems (for shiitake, chanterelle, and portobello) |
| Cleaning method | Wipe with a damp paper towel, wash in cold running water and spin dry |
| Cutting methods | Slicing, quartering, dicing, chopping, pulling apart by hand |
| Storage | Refrigerate for 1-2 days after cutting, freeze for later use |
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What You'll Learn

Clean mushrooms with a damp paper towel or cold running water
When preparing mushrooms, it's essential to clean them thoroughly to remove any dirt or debris. While some people advocate for simply brushing off the dirt or wiping the mushrooms with a damp paper towel, others suggest rinsing them under cold running water. Here are some detailed instructions for cleaning mushrooms using these two methods:
Using a damp paper towel
This method is a gentle and effective way to clean mushrooms. Take a paper towel and dampen it slightly with cold water. Use the damp paper towel to wipe each mushroom individually, gently removing any dirt or debris that may be present. Make sure to wipe the entire surface of the mushroom, including the cap, gills, and stem. This method helps to avoid the mushrooms absorbing too much water, which can affect their texture and cooking time.
Cleaning with cold running water
For this method, you will need access to a sink with cold running water. Place the mushrooms in a colander or mesh strainer and rinse them under the cold running water. Use your hands to gently rub the mushrooms as they are rinsed, ensuring that any dirt or debris is washed away. This method is particularly effective for mushrooms with clustered dirt near the stem or in the crevices of the gills. After rinsing, shake the colander or strainer gently to remove any excess water, or transfer the mushrooms to a salad spinner to spin them dry.
It is important to note that while rinsing mushrooms under water can be an effective cleaning method, it may slightly increase their cooking time due to the small amount of water absorbed. However, this effect is minimal, typically adding only 15 to 30 seconds to the overall cooking process. Therefore, it is generally recommended to clean mushrooms with a damp paper towel or cold running water before proceeding with slicing, quartering, or cooking them as desired.
In summary, when cleaning mushrooms, you can choose between using a damp paper towel or rinsing them under cold running water. Both methods effectively remove dirt and debris, ensuring that your mushrooms are ready for further preparation or cooking. Remember to clean the mushrooms gently yet thoroughly to maintain their freshness and quality.
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Trim dried out or woody parts from stems
Trimming dried-out or woody stems from mushrooms is a crucial step in preparing them for cooking. This process ensures you use only the freshest and most tender parts of the mushroom, enhancing the taste and texture of your dish. Here's a step-by-step guide to help you trim dried-out or woody stems from mushroom varieties like button, cremini, baby bella, king trumpet, oyster, and Lion's mane mushrooms:
Step 1: Inspect the Mushrooms
Before trimming, carefully examine each mushroom. Look for any dried-out or woody areas on the stems. These parts will be tougher in texture and may have a darker colour. The bottom of the stem can sometimes be discoloured, but it shouldn't be overly dry, mushy, or starting to shred.
Step 2: Trim the Stems
Using a sharp knife, carefully cut away the dried-out or woody portions of the stems. Make sure to trim only the necessary amount to retain as much of the mushroom as possible. You can also use your fingers to gently pull away any loose, dried-out pieces. For shiitake, chanterelle, and portobello mushrooms, it's best to remove the stems entirely, as they tend to be woody and dried out throughout.
Step 3: Clean the Mushrooms
After trimming, wipe the mushrooms with a damp paper towel to remove any dirt or debris. Alternatively, you can gently rinse them under cold running water and then spin them dry in a salad spinner. Cleaning the mushrooms before cutting will reduce the amount of liquid they absorb, which can affect their texture and cooking time.
Step 4: Cut or Slice the Mushrooms
Once trimmed and cleaned, you can cut the mushrooms to your desired size and shape. You can slice them lengthwise into thick or thin pieces, quarter them, or chop them into smaller pieces, depending on your recipe requirements.
Step 5: Store or Use the Mushrooms
Freshly cut mushrooms are best used immediately. However, if you need to store them, place them in the refrigerator, where they will keep for 1 to 2 days. Mushrooms are highly perishable and will spoil faster once cut. You can also freeze mushrooms for extended storage.
Remember, trimming dried-out or woody stems from mushrooms ensures you use only the freshest and most palatable parts of the fungus. This simple step can elevate the flavour and texture of your mushroom dishes, making them more enjoyable for you and your guests.
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Remove stems entirely from shiitake, chanterelle, and portobello mushrooms
When preparing shiitake mushrooms, some recipes may instruct you to discard the stems entirely. However, the stems are edible, and some people choose to slice them up and include them in their dishes. If you prefer a softer texture, you can remove the ends of the stems and slice the rest into smaller pieces.
Chanterelle mushrooms have smooth surfaces and solid, non-hollow stems. The caps of these mushrooms have folds and crevices that can collect dirt, pine needles, bugs, and other debris. To clean chanterelles, cut off the ends of the stems where dirt tends to clump, and use ice-cold water to rinse them quickly, drying them thoroughly afterward. Alternatively, use a dry toothbrush or a mushroom brush to remove surface dirt.
Portobello mushrooms are commonly used in dishes like pizza and vegetarian "pulled pork". They are known for their "gills," or lamella, which are thin, papery ribs that live underneath the cap. These gills are commonly removed before cooking, as they are primarily used for spore dispersal and can be unappetizing to some.
By removing the stems entirely from shiitake, chanterelle, and portobello mushrooms, you can focus on utilizing the caps of these mushrooms, which tend to be the most desirable parts in terms of texture and flavor.
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Cut lengthwise into slices or pull apart by hand
Trimming mushrooms is an important step in preparing them for cooking. While some mushrooms don't require trimming, most varieties benefit from having any dried-out or woody parts removed before cutting or cooking. This includes button/white mushrooms, cremini/baby bella mushrooms, king trumpet/oyster mushrooms, and Lion's mane mushrooms. Shiitake, chanterelle, and portobello mushrooms are varieties where the stems should be removed entirely due to their tough and woody nature.
When it comes to cutting mushrooms, one option is to slice them lengthwise into pieces. First, trim the mushrooms by removing any dried-out parts of the stems with a knife. You can then cut the mushrooms lengthwise into slices of your desired thickness. Lion's mane mushrooms, with their shaggy appearance, are a variety that can be cut this way. Their meaty texture lends itself to slightly thicker slices. Alternatively, you can simply pull apart the mushrooms by hand into the desired size, although this method may be less precise.
Slicing mushrooms lengthwise is a versatile technique that suits various cooking methods and dishes. Sliced mushrooms are commonly used in pasta, pizza, and stir-fry recipes. They can also be added to soups or used as a replacement for meat in certain recipes. If you're looking to roast your mushrooms, quartering them first is a great option. To quarter mushrooms, simply cut them in half, turn them 90 degrees, and then cut the halves into quarters.
It's worth noting that mushrooms can be stored and preserved in various ways. Freshly cut mushrooms can be refrigerated for 1 to 2 days, although they will have a shorter shelf life compared to whole mushrooms. For longer-term storage, mushrooms can be frozen. Additionally, while some sources recommend against washing mushrooms due to the belief that they will absorb water and become difficult to cook, others suggest gently washing them in cold running water and drying them in a salad spinner.
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Store cut mushrooms in the refrigerator for 1-2 days or freeze them
Once you've trimmed your mushrooms, you can store them in the refrigerator for 1-2 days. It's best to wrap them in a paper towel and place them in a bowl, as the paper towel will absorb any excess moisture. Mushrooms are delicate and perishable, and moisture is the number one enemy when it comes to keeping them fresh. You can also store cut mushrooms in an airtight container in the refrigerator, but they will go bad more quickly than if they are left whole.
If you want to keep your mushrooms for longer, you can freeze them. It's best to cook, blanch, sauté, poach, or steam them first, to help lock in their texture and flavour. Then, freeze them on a parchment paper-lined baking sheet until they are frozen solid. Finally, transfer the frozen mushrooms to an airtight, vacuum-sealed plastic bag and store them in the freezer. Frozen mushrooms can last for up to 12 months.
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Frequently asked questions
Mushrooms like button/white mushrooms, cremini/baby bella mushrooms, king trumpet/oyster mushrooms, and Lion’s mane mushrooms usually need to be trimmed. Look out for dried-out or woody stems.
Shiitake, chanterelle, and portobello mushrooms don't need to be trimmed. Instead, remove the stems entirely as they tend to be woody and dried out.
Wipe mushrooms with a damp paper towel to remove dirt and debris. Alternatively, you can rinse them under cold running water, spin them dry in a salad spinner, and then cook as usual.
You can do either. Cutting the stems with a knife is a more precise method, while pulling them out by hand is faster and easier.

























