
Mushrooms are a versatile and nutrient-dense food, often celebrated for their low calorie content and rich flavor. When considering how many calories are in a cup of mushrooms, it’s important to note that the exact count can vary depending on the type of mushroom and its preparation method. On average, a one-cup serving of raw, sliced white mushrooms contains approximately 15 to 20 calories, making them an excellent choice for those looking to maintain or lose weight. Other varieties, such as portobello or shiitake mushrooms, may have slightly different calorie counts, but all remain relatively low. Whether sautéed, grilled, or eaten raw, mushrooms offer a guilt-free way to add depth and nutrition to meals without significantly increasing calorie intake.
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What You'll Learn

Button Mushrooms Calorie Count
Button mushrooms, a popular variety known for their mild flavor and versatility in cooking, are also celebrated for their low-calorie content. When considering how many calories in a cup of mushrooms, specifically button mushrooms, the answer is remarkably low. A one-cup serving of raw button mushrooms (approximately 70 grams) contains only about 15 to 20 calories. This makes them an excellent choice for those monitoring their calorie intake or aiming to maintain a healthy diet. The low calorie count is primarily due to their high water content, which stands at around 92%, and their minimal fat content.
For cooked button mushrooms, the calorie count remains relatively low but can vary slightly depending on the cooking method. A cup of cooked button mushrooms (about 86 grams) typically contains 25 to 30 calories. Cooking methods like sautéing or grilling may add a few extra calories if oil or butter is used, but the increase is minimal. Steaming or boiling button mushrooms is an even lighter option, as it retains their nutritional value without adding any extra calories.
It’s important to note that while button mushrooms are low in calories, they are also nutrient-dense. They provide essential vitamins and minerals, such as vitamin B, potassium, and selenium, while being virtually fat-free and cholesterol-free. This combination of low calories and high nutritional value makes button mushrooms a standout choice for health-conscious individuals.
When incorporating button mushrooms into meals, their calorie count remains a non-issue. For example, adding a cup of sliced button mushrooms to an omelet, salad, or stir-fry contributes very few calories while enhancing flavor and texture. Their versatility allows them to be used in a variety of dishes without significantly impacting the overall calorie content of the meal.
In summary, the button mushrooms calorie count is exceptionally low, with a raw cup containing approximately 15 to 20 calories and a cooked cup around 25 to 30 calories. This makes them an ideal ingredient for those looking to enjoy flavorful, nutritious meals without worrying about excessive calorie intake. Whether raw or cooked, button mushrooms are a guilt-free addition to any diet.
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Portobello Mushrooms Nutritional Value
Portobello mushrooms are a popular and versatile ingredient in many cuisines, known for their meaty texture and rich flavor. When considering Portobello mushrooms nutritional value, one of the most common questions is, "How many calories are in a cup of mushrooms?" A one-cup serving of raw Portobello mushrooms contains approximately 15 to 20 calories, making them an excellent low-calorie option for those looking to manage their weight or maintain a healthy diet. This low caloric content is primarily due to their high water content, which accounts for about 92% of their weight.
Beyond their calorie count, Portobello mushrooms offer a wealth of essential nutrients. They are a good source of vitamin B, particularly riboflavin (B2) and niacin (B3), which play crucial roles in energy metabolism and maintaining healthy skin. Additionally, they provide potassium, an important mineral for heart health and muscle function, with about 300 mg per cup. Portobello mushrooms also contain selenium, an antioxidant that supports immune function, and copper, which aids in the formation of red blood cells.
Another standout aspect of Portobello mushrooms nutritional value is their dietary fiber content. A one-cup serving contains roughly 2 grams of fiber, which promotes digestive health and helps you feel fuller for longer. This makes them an ideal addition to meals for those aiming to increase their fiber intake without significantly boosting calorie consumption. Furthermore, Portobello mushrooms are naturally fat-free and cholesterol-free, aligning them with heart-healthy dietary guidelines.
For those monitoring their carbohydrate intake, Portobello mushrooms are an excellent choice. A cup of raw Portobello mushrooms contains only 3 grams of carbohydrates, making them suitable for low-carb diets like keto or paleo. Their low glycemic index also ensures they won’t cause rapid spikes in blood sugar levels, benefiting individuals with diabetes or insulin sensitivity.
Lastly, Portobello mushrooms are a good plant-based source of protein, offering about 2 grams per cup. While this amount is modest, it contributes to their overall nutritional profile, especially when combined with their other health benefits. Whether grilled, stuffed, or sautéed, Portobello mushrooms provide a nutrient-dense option that enhances both the flavor and nutritional value of your meals. In summary, their low calorie count, combined with their rich array of vitamins, minerals, and fiber, makes Portobello mushrooms a standout choice for health-conscious individuals.
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Shiitake Mushrooms Caloric Content
Shiitake mushrooms are a popular variety known for their rich, savory flavor and numerous health benefits. When considering the caloric content of shiitake mushrooms, it’s essential to focus on their nutritional profile per cup. According to dietary data, one cup of raw shiitake mushrooms (approximately 96 grams) contains about 40 to 50 calories. This low-calorie count makes them an excellent choice for those monitoring their caloric intake while still enjoying nutrient-dense foods. The caloric content primarily comes from carbohydrates and proteins, with minimal fat, aligning with their reputation as a healthy food option.
When shiitake mushrooms are cooked, their caloric content may slightly increase due to water loss, which concentrates their nutrients. For instance, one cup of cooked shiitake mushrooms (about 145 grams) typically contains around 80 to 90 calories. Cooking methods like sautéing, grilling, or roasting can enhance their flavor and texture without significantly altering their caloric value. However, adding oils or butter during cooking will increase the overall calorie count, so it’s advisable to use minimal fats if calorie control is a priority.
The low caloric content of shiitake mushrooms is partly due to their high water content, which constitutes about 85-90% of their weight. This makes them a filling yet low-calorie addition to meals. Additionally, shiitake mushrooms are rich in dietary fiber, which aids digestion and promotes satiety, further supporting weight management goals. Their caloric profile, combined with their fiber content, makes them a smart choice for calorie-conscious individuals.
Beyond their caloric content, shiitake mushrooms offer a range of nutrients that contribute to their overall health value. They are a good source of vitamins (such as B vitamins) and minerals (like copper and selenium), as well as bioactive compounds like ergothioneine and beta-glucans. These nutrients support immune function, reduce inflammation, and provide antioxidant benefits, making shiitake mushrooms a valuable addition to any diet despite their low calorie count.
In summary, the caloric content of shiitake mushrooms is remarkably low, with approximately 40 to 50 calories per cup raw and 80 to 90 calories per cup cooked. Their minimal calorie contribution, combined with their nutritional richness, makes them an ideal ingredient for health-conscious cooking. Whether enjoyed raw in salads or cooked in stir-fries, shiitake mushrooms offer a flavorful way to enhance meals without significantly impacting caloric intake.
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Oyster Mushrooms Calories per Cup
When considering the nutritional value of mushrooms, oyster mushrooms stand out as a low-calorie, nutrient-dense option. A one-cup serving of raw oyster mushrooms contains approximately 28 calories, making them an excellent choice for calorie-conscious individuals. This low calorie count is primarily due to their high water content, which comprises about 90% of their weight, and their minimal fat content. For those tracking their caloric intake, incorporating oyster mushrooms into meals can add volume and flavor without significantly increasing the overall calorie count.
Cooking methods can slightly alter the calorie content of oyster mushrooms. For instance, sautéing or grilling them with a small amount of oil will add a few extra calories, but the increase is minimal. A cup of cooked oyster mushrooms typically ranges between 30 to 35 calories, depending on the amount of oil or butter used. This makes them a versatile ingredient for various dishes, from stir-fries to soups, without compromising dietary goals.
In addition to being low in calories, oyster mushrooms offer a range of health benefits. They are rich in vitamins, minerals, and antioxidants, including vitamin B, potassium, and ergothioneine. These nutrients support immune function, heart health, and overall well-being. Thus, while focusing on the calorie content, it’s important to recognize the broader nutritional value that oyster mushrooms bring to the table.
For comparison, other mushroom varieties like button or shiitake mushrooms have slightly different calorie counts. However, oyster mushrooms remain one of the lowest-calorie options among edible fungi. This makes them particularly appealing for weight management or low-calorie diets. A one-cup serving of raw button mushrooms, for example, contains around 15 calories, but oyster mushrooms offer a unique texture and flavor profile that sets them apart.
Incorporating oyster mushrooms into your diet is simple and rewarding. Whether used as a meat substitute, added to salads, or included in hearty stews, their low calorie count per cup ensures they fit seamlessly into balanced meals. For those monitoring their calorie intake, oyster mushrooms provide a satisfying and nutritious option without the guilt of excess calories. Always remember to measure portions accurately to stay within your dietary goals while enjoying the benefits of these versatile fungi.
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Cooked vs. Raw Mushrooms Calories
When considering the calorie content of mushrooms, one of the first distinctions to make is whether they are cooked or raw. A raw cup of sliced mushrooms typically contains about 15 to 20 calories, depending on the variety. This low calorie count is one of the reasons mushrooms are a popular choice for those looking to maintain or lose weight. Raw mushrooms are composed of approximately 92% water, which contributes to their minimal calorie content. They are also rich in nutrients like vitamin D, potassium, and antioxidants, making them a healthy addition to any diet.
Cooking mushrooms, however, can alter their calorie content, though not significantly. When mushrooms are cooked, they lose a considerable amount of their water content through evaporation. This reduction in water weight concentrates the nutrients and calories in the remaining volume. On average, a cup of cooked mushrooms contains around 25 to 30 calories. The slight increase in calories is due to the loss of water rather than the addition of fat or other calorie-dense ingredients, assuming they are cooked without added oils or butter.
The cooking method plays a crucial role in determining the final calorie count of mushrooms. For instance, sautéing mushrooms in oil or butter will add extra calories based on the amount of fat used. A tablespoon of olive oil, for example, adds about 120 calories. Conversely, methods like grilling, baking, or steaming mushrooms without added fats will keep the calorie count closer to that of raw mushrooms. Therefore, if calorie control is a priority, opting for low-fat cooking methods is advisable.
Another factor to consider is the type of mushroom being consumed. Common button mushrooms, which are often used in cooking, have a slightly different calorie profile compared to specialty mushrooms like shiitake or portobello. However, the difference is minimal, and the cooking vs. raw comparison remains consistent across varieties. For those tracking their calorie intake, it’s essential to account for both the type of mushroom and the cooking method used.
In summary, while raw mushrooms are lower in calories due to their high water content, cooked mushrooms offer a slightly higher calorie count because of water loss during cooking. The difference is generally small, ranging from 15-20 calories for raw mushrooms to 25-30 calories for cooked mushrooms per cup. For individuals monitoring their calorie intake, choosing raw mushrooms or cooking them without added fats can help maintain a lower calorie profile. Regardless of preparation, mushrooms remain a nutritious and low-calorie food option.
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Frequently asked questions
A cup of raw mushrooms (about 70 grams) contains approximately 15-20 calories.
No, cooked mushrooms typically have a similar calorie count to raw mushrooms, around 15-20 calories per cup, as cooking primarily reduces water content without significantly altering calorie density.
A cup of sliced mushrooms (about 70 grams) contains roughly 15-20 calories, similar to whole raw mushrooms.
No, button mushrooms, like most common varieties (e.g., white, cremini), contain about 15-20 calories per cup. Caloric differences between mushroom types are minimal.

























