
Button mushrooms are one of the most common types of mushrooms, often seen in grocery stores and salad bars. To get a pound of medium-sized fresh button mushrooms, you need about 20 to 24 pieces. When chopped, you need about 4 to 5 pieces or 3 ounces to make a cup. If you need a half-pound of chopped button mushrooms, that would be 2 3/4 cups or 11 to 14 pieces.
| Characteristics | Values |
|---|---|
| Number of medium-sized button mushrooms in a pound | 20-24 |
| Number of chopped button mushrooms in a cup | 4-5 pieces or 3 ounces |
| Number of sliced button mushrooms in a cup | 4-5 pieces or 3 ounces |
| Number of chopped button mushrooms in a half-pound | 11-14 pieces or 2 3/4 cups |
| Number of sliced button mushrooms in a half-pound | 11-14 pieces or 2 1/2 cups |
| Number of raw and sliced button mushrooms in a pound | 5 cups |
| Number of cooked button mushrooms in a pound | 2 cups |
| Percentage of Agaricus mushrooms consumed by Americans that are White Button mushrooms | 97% |
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What You'll Learn

Common types: button, chanterelle, enoki, Portobello, shiitake
Button mushrooms are one of the most common and accessible types of mushrooms, found in most supermarkets and grocery stores worldwide. They are also one of the most affordable varieties, often sold for around £5.25/kg in the UK. Their mild, earthy flavour and firm texture make them a versatile ingredient. They can be eaten raw, but grilling or sauteing in butter or oil is recommended for a more flavourful experience.
Chanterelle mushrooms are commonly used in European cuisines, including French and Austrian, and are also native to North America. They are especially abundant in the Pacific Northwest from late spring to early fall. They are typically used in fricassee or paired with whole grilled salmon. They have a shorter shelf life than most mushrooms, lasting only 3-4 days when stored in the refrigerator.
Enoki mushrooms, also known as enokitake, enokidake, or golden needle mushrooms, are a common ingredient in East Asian recipes. They have a mild, fruity flavour and a crunchy texture, often added to hot pots and ramen. They are typically found in oriental supermarkets, dried and vacuum-sealed. Cultivated enoki mushrooms are the most common variety, recognised by their cluster of white, long, thin stems with small caps.
Portobello mushrooms, also known as white mushrooms, are extremely versatile in recipes due to their mild flavour. They are common in Italian cooking, lending depth to sauces and pastas, and they make a great meat substitute. When portobellos are young and small, they are called criminis, and when they are even younger, they are called white button mushrooms.
Shiitake mushrooms are known for their rich, earthy flavour and meaty texture, making them a popular choice for enhancing umami in dishes, particularly in Asian cuisine. They are identified by their umbrella-shaped brown caps, which curl slightly under. They can be foraged in the wild from decaying wood, but most shiitake mushrooms are cultivated. They contain a compound called lentinan, which is thought to be good for the immune system, but it may also cause the rare skin condition 'shiitake dermatitis' if consumed raw or undercooked.
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Medium-sized: 20-24 mushrooms make a pound
When it comes to medium-sized button mushrooms, it takes approximately 20 to 24 of them to make up a pound. This variety of mushroom, scientifically known as Agaricus, is one of the most common types found in grocery stores and markets. They are frequently used in cooking and are often sold fresh, although they can also be canned, dried, or frozen.
Button mushrooms are versatile and can be chopped, sliced, or left whole, depending on your culinary needs. When chopped, you'll need around 4 to 5 pieces to make a cup, or approximately 3 ounces. If you're working with sliced button mushrooms, a half-pound will give you about 2 1/2 cups, or roughly 592 milliliters.
It's important to note that mushrooms shrink significantly during cooking. For example, a pound of raw, sliced button mushrooms, which equates to about 5 cups, will reduce to just 2 cups once cooked. So, if you're using medium-sized button mushrooms in your recipes, be sure to factor in this shrinkage and adjust your quantities accordingly.
Additionally, button mushrooms are a good source of nutrition and are often used as meat substitutes, especially for vegans and vegetarians. They are neither fruits nor vegetables but part of the fungus family, which includes yeasts and molds. With their high water content, typically between 80% and 90%, button mushrooms are a popular and healthy option for a variety of dishes.
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Chopped: 4-5 mushrooms make a cup
When cooking with mushrooms, your recipe may call for a specific number of mushrooms, weight, or cups of sliced or chopped mushrooms. Knowing how much of the fresh product to buy can be tricky, but with a few simple conversions, you can work out how many whole mushrooms are in a cup of chopped mushrooms.
Button mushrooms, also known as white mushrooms, are the most common mushroom variety available. When chopped, you need about 4 to 5 medium-sized pieces, or about 3 ounces, to make a cup. This is equivalent to about 85 grams of fresh mushrooms. If you need a half-pound of chopped button mushrooms, you would need at least 2 3/4 cups or 11 to 14 mushrooms.
It's worth noting that mushrooms are typically sold by the pound or less and are often available whole, sliced, or chopped. Purchasing them whole is usually the most affordable option.
Mushrooms are part of the fungus family, which also includes yeasts and molds. They are neither fruits nor vegetables but are often used in cooking like vegetables due to their nutritional content. They are also popular among vegans and vegetarians as a meat substitute.
When cooked, mushrooms shrink, and their quantity can decrease by more than half. For example, a pound of raw, sliced button mushrooms (about 5 cups) would yield only 2 cups when cooked.
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Sliced: 1/2 pound makes 2 1/2 cups
When it comes to cooking with mushrooms, it's important to know how much you need, especially when working with a recipe that calls for a specific amount. Button mushrooms are one of the most common varieties of mushrooms, and understanding their measurements can be very helpful in the kitchen.
If you're working with sliced button mushrooms, it's good to know that a half-pound of these mushrooms will give you about 2 and a half cups, or approximately 592 milliliters. This measurement is quite useful when preparing meals that require a specific quantity of mushrooms.
To put it into perspective, a medium-sized fresh button mushroom weighs around 0.2 ounces (5.6 grams) to 0.3 ounces (8.4 grams). So, when you have about 4 to 5 of these mushrooms, you'll get a little over 3 ounces or approximately 1 cup when sliced. This means that for a half-pound of sliced button mushrooms, you'll need around 11 to 14 medium-sized mushrooms.
It's worth noting that the volume of mushrooms can change when they are cooked. Mushrooms contain a high water content, and when cooked, they tend to shrink, reducing their overall quantity. For example, 1 pound of raw and sliced button mushrooms, which equates to about 5 cups, will shrink to roughly 2 cups once cooked. So, it's always good to keep this in mind when preparing dishes that require cooked mushrooms.
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Cooked: quantity halves
When cooking button mushrooms, it is important to note that their quantity will halve. This means that if you start with a pound of raw, sliced button mushrooms, which amounts to approximately 5 cups or 20 to 24 medium-sized mushrooms, you will end up with only 2 cups of cooked mushrooms. This significant reduction in volume is something to keep in mind when planning your meals.
To ensure you have enough cooked button mushrooms for your dish, it is advisable to start with a larger quantity of raw mushrooms. As a general rule, raw button mushrooms will reduce to more than half their original volume when cooked. This shrinkage is due to the high water content of mushrooms, which evaporates during the cooking process.
When preparing a recipe that calls for cooked button mushrooms, it is important to allow for this reduction in quantity. For example, if your recipe requires 2 cups of cooked button mushrooms, you should start with at least 4 cups of raw, sliced mushrooms or approximately 16 to 19 medium-sized mushrooms. This will ensure that you have the required amount after cooking.
Additionally, it is worth noting that the cooking method can also impact the final quantity of mushrooms. Different cooking techniques, such as sautéing, boiling, or grilling, may result in varying levels of shrinkage. Therefore, it is always a good idea to err on the side of having too many mushrooms rather than too few when preparing your ingredients.
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Frequently asked questions
There are about 20 to 24 pieces of medium-sized fresh button mushrooms in a pound.
About 4 to 5 pieces or 3 ounces of chopped button mushrooms are needed to make a cup.
There are 2 3/4 cups or about 650mls of chopped mushrooms in a half-pound bag.
Sliced button mushrooms will make up about 2 1/2 cups or 592mls per half-pound.
Yes, cooked button mushrooms will decrease to less than half their original volume. For example, 5 cups of raw mushrooms will reduce to 2 cups when cooked.

























