
Mushrooms are a versatile ingredient, adding flavour, texture and appearance to a dish. They can be purchased in a variety of forms, including whole, sliced, chopped, dried, canned, and powdered. When cooking with mushrooms, it can be frustrating to find that your recipe calls for a different type of mushroom than the one you have. Luckily, there are some simple conversions you can use to swap out one kind of mushroom for another. For example, 3oz of mushrooms is equivalent to 0.1875 lbs of mushrooms, or around 4 to 5 medium-sized fresh button mushrooms.
| Characteristics | Values |
|---|---|
| Number of medium-sized fresh button mushrooms | 4 to 5 |
| Number of large portabellas | 1 |
| Cups of sliced button mushrooms | 0.375 |
| Cups of chopped button mushrooms | 0.35 |
| Grams | 85 |
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What You'll Learn

Fresh vs dried mushrooms: weight differences
Mushrooms are versatile ingredients that can be purchased fresh, dried, canned, or powdered. They come in a variety of types, including button, portobello, cremini, shiitake, and more. When trying out a new recipe, it can be confusing to determine how much of this fungus to use, especially when recipes often call for a specific volume or weight.
To complicate matters further, the weight difference between fresh and dried mushrooms is significant. As a general rule, 450 grams of fresh mushrooms will yield approximately 70 to 85 grams of dried mushrooms. This means that dried mushrooms are much lighter than their fresh counterparts. For example, one pound (16 ounces) of fresh mushrooms will yield approximately 2.3 ounces of dried mushrooms.
This weight difference is mainly due to the water content in fresh mushrooms, which typically ranges from 70% to 90%. When fresh mushrooms are dried, most of the water evaporates, leaving behind a concentrated form with a more intense flavor. This process also extends the shelf life of the mushrooms, making them available for consumption year-round, even for varieties with a short growing season.
When substituting fresh mushrooms with dried in a recipe, it is essential to consider this weight difference. For instance, if a recipe calls for 3 ounces of fresh mushrooms, you would need significantly less if using dried mushrooms. As a general rule, you can estimate that 1 pound of fresh mushrooms is equivalent to 2.3 ounces of dried mushrooms. Therefore, 3 ounces of fresh mushrooms would roughly equate to 0.6 ounces of dried mushrooms.
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Chopped vs sliced mushrooms
To answer your first question, 3 oz of mushrooms is equivalent to 4 to 5 medium-sized fresh button mushrooms.
Now, here's the information on chopped vs sliced mushrooms:
Chopped mushrooms are created by first slicing the mushrooms and then cutting them into smaller pieces. Chopped mushrooms are ideal for recipes that use them in place of meat. They are also suitable for soups, pasta, and stir-fries. Chopped mushrooms can be stored in the refrigerator for 1 to 2 days but will go bad more quickly than if they are left whole.
On the other hand, sliced mushrooms are cut into thin slices of the desired size. Sliced mushrooms are commonly used in stir-fries, soups, pasta, and pizza. Sliced mushrooms can also be frozen for later use.
It's worth noting that purchasing whole mushrooms is typically more affordable than buying them pre-sliced or chopped. However, recipes often call for a specific cut, so it's helpful to understand the conversions between the different forms of mushrooms. For example, 8 ounces of sliced fresh button mushrooms is equivalent to 4 ounces of drained canned sliced mushrooms.
In summary, the main difference between chopped and sliced mushrooms is the size and shape of the pieces. Chopped mushrooms are smaller and more evenly sized, making them suitable for recipes where a meaty texture is desired. Sliced mushrooms are larger and can add a variety of textures and flavours to dishes.
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Portobello vs button mushrooms
Portobello mushrooms, button mushrooms, and crimini mushrooms are all scientifically known as agaricus bisporus. They are the same mushrooms but are called by different names depending on the stage of their lifespan. Button mushrooms are the youngest, harvested early on and are white with a mild flavour. Crimini mushrooms are the "teenagers", browner in colour, with a deeper flavour. Portobello mushrooms are the largest and fully mature version of agaricus bisporus. They have the strongest flavour and the least moisture content.
Portobello mushrooms are typically 4 to 6 inches in diameter and weigh about 3 ounces (85 grams), with darker flesh than button mushrooms. A half-pound of fresh button mushrooms yields about 2 3/4 cups chopped or 2 1/2 cups sliced. It takes about 3 ounces or 4 to 5 button mushrooms either sliced or chopped to reach the 1-cup mark.
When it comes to nutrition, there is no significant difference between the three mushrooms. They are all packed with vitamins and minerals, including B vitamins, vitamin C, vitamin D, vitamin E, vitamin K, calcium, copper, iron, and magnesium. They are also rich in antioxidants, potassium, beta-glucans, and active compounds such as polysaccharides, amino acids, and triterpenoids, which have various health benefits.
While there may be slight variations in appearance, flavour, and moisture content, portobello, button, and crimini mushrooms are essentially the same type of mushroom. They are all widely consumed and used in cooking, with button mushrooms being the most common and versatile variety.
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Converting mushroom measurements
Let's start with fresh mushrooms. A typical portobello mushroom weighs about 3 ounces (85 grams) and has a diameter of 4 to 6 inches. On the other hand, a pound of fresh button mushrooms yields about 2 1/2 to 2 3/4 cups when sliced or chopped, respectively. So, if your recipe calls for 3 ounces of mushrooms, you would need approximately 1 to 1.5 cups of sliced or chopped button mushrooms.
Now, let's consider dried mushrooms. Mushrooms lose a significant amount of weight during dehydration, with fresh mushrooms losing between 70-90% of their weight. This means that 1 pound of dried mushrooms is equivalent to about 7 to 10 pounds of fresh mushrooms. So, if your recipe calls for 3 ounces of dried mushrooms, you would need about 10.5 to 14 ounces of fresh mushrooms, which is equivalent to about 3 to 4 cups of sliced or chopped button mushrooms.
Lastly, let's talk about canned and powdered mushrooms. Canned mushrooms are already prepared and cooked, so you can directly substitute them for fresh mushrooms in your recipe. As for powdered mushrooms, you can reconstitute them by adding water to create a mushroom paste or sauce, but the conversion ratios will depend on the concentration of the powder and your desired consistency.
In conclusion, by understanding these basic conversion rules and with a bit of math, you can easily convert mushroom measurements and cook with confidence, ensuring your recipes turn out delicious every time.
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Mushroom varieties and uses
Mushrooms are a fungus, not a vegetable, and they come in a wide variety of shapes, sizes, and colours. They are a versatile ingredient, adding interesting textures, flavours, and appearances to recipes. Some are edible, while many are poisonous. Mushrooms can be cultivated or found growing wild.
Button Mushrooms
Also known as common mushrooms, these are the most common variety available. They are mild in flavour and can be eaten raw or cooked. They are often sold packaged and whole, sliced, or chopped. Button mushrooms are related to cremini and portobello mushrooms, with the only difference being their age. Button mushrooms are the youngest, cremini are slightly older, and portobellos are the oldest. Portobellos are the final full-grown stage of the button mushroom's life cycle. They are much larger than cremini or button mushrooms and have a more meaty texture.
Cremini Mushrooms
Cremini mushrooms are also known as Baby Bellas. They are darker and firmer than white button mushrooms and are great for soups and stews as they maintain some texture when cooked.
Portobello Mushrooms
Portobello mushrooms are large and have a dark brown cap. They are commonly used in Italian cooking and are great for grilling and stuffing. They are often used as a meat substitute.
Chanterelle Mushrooms
Chanterelles are commonly used in European cuisines, including French and Austrian. They are native to North America and are particularly abundant in the Pacific Northwest from late spring to early fall. They are excellent sautéed and are often used to add rich flavour and texture to pasta dishes.
Porcini Mushrooms
Also known as Cep mushrooms, these are an Italian staple and are commonly used in Italian cooking. They have a distinctive taste that some compare to sourdough bread, with slightly creamy and nutty flavours.
Other Varieties
There are many other varieties of mushrooms, including shiitake, oyster, enoki, morels, black trumpets, and king oysters. Mushrooms can be used in a wide variety of dishes, including soups, stews, stir-fries, salads, pizzas, tacos, and pasta dishes. They can also be marinated and roasted, or used in traditional and alternative medicines.
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Frequently asked questions
3oz of mushrooms is approximately 0.1875 lbs.
Mushrooms can be measured in weight (ounces or pounds) or in volume (cups).
3oz of mushrooms is approximately 1 cup of sliced or chopped mushrooms.
Depending on the type of mushroom, 3oz is approximately 4-5 medium-sized button mushrooms or 1 large portobello mushroom.
No, dried mushrooms weigh significantly less than fresh mushrooms. It takes about 7-10 lbs of fresh mushrooms to make 1 lb of dried mushrooms.

























