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Low-calorie mushroom with fiber, selenium, and B vitamins
In season: Spring · Summer · Autumn · Winter
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
1 piece (medium) of Portobello mushroom (84 g) has 18 calories. That works out to 22 calories per 100 g. It contains 3.3 g of carbs, 1.8 g of protein, 0.3 g of fat and 1.1 g of fiber. Its 13.4 µg of Biotin covers 45% of the Daily Value. Its glycemic index is 10 (low), so it raises blood sugar slowly.
Selected: 1 piece (medium) · 84 g
18
KCAL / 84G
Carbs
3.3g
· 1% DV
Protein
1.8g
· 4% DV
Fat
0.3g
· 0% DV
Fiber
1.1g
· 4% DV
DV is the share of the daily value covered, on a 2,000 kcal reference diet.
Calories come from: Carbs 57% · Protein 31% · Fat 12%
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 18 kcal | |
| Total fat | 0.3 g | 0% |
| Saturated fat | 0.04 g | 0% |
| Trans fat | 0 g | |
| Sodium | 5.04 mg | 0% |
| Total carbohydrate | 3.3 g | 1% |
| Fiber | 1.1 g | 4% |
| Protein | 1.8 g | 4% |
Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.
Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.
Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.
Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.
Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.
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| Serving | Amount | Calories |
|---|---|---|
| 1 piece (medium) | 84 g | 18 kcal |
| 1 piece (small) | 50 g | 11 kcal |
| 1 cup (shredded) | 70 g | 15 kcal |
| 1 cup (diced) | 86 g | 19 kcal |
| 100 g | 100 g | 22 kcal |
| 1 piece (large) | 120 g | 26 kcal |
| 1 serving (medium) | 150 g | 33 kcal |
| 1 piece (jumbo) | 160 g | 35 kcal |
| 2 piece (double) | 168 g | 37 kcal |
| 1 serving (large) | 250 g | 55 kcal |
Calculated from 22 calories per 100 g.
Cook a Portobello mushroom in a skillet, oven, or on a grill until the cap is tender and heated through. Brush it lightly with oil and add salt or seasonings; its broad cap also works well for stuffing.
No, a Portobello mushroom’s dark gills are edible and do not need to be removed. Scrape them out with a spoon if you want more room for stuffing or a lighter-colored finished dish.
Yes, you can eat a Portobello mushroom stem after trimming off its dry, tough end. Chop the rest into a filling, sauté it with other vegetables, or add it to soup or sauce.
Wipe a Portobello mushroom with a damp cloth or rinse it briefly under running water, then dry it well. Avoid soaking it, because the cap can absorb water and release extra moisture while cooking.
Keep Portobello mushrooms unwashed in the refrigerator, in a paper bag or a container lined with paper towel. Avoid sealing them in an airtight plastic bag, where trapped moisture can make them turn slimy sooner.
Yes, a fresh Portobello mushroom can be eaten raw after it has been cleaned and thinly sliced. Cooking gives it a softer texture and deeper flavor; use only mushrooms that are fresh and in good condition.
Brush a cleaned Portobello mushroom lightly with oil and place it on the grill with the gill side down first. Turn it once the cap has softened, and cook until it is heated through and tender.
Yes, a whole Portobello mushroom cap makes a convenient burger-style filling, though it is not nutritionally or texturally identical to meat. Grill or pan-cook it, then serve it in a bun with your preferred toppings.
Yes, but Portobello mushrooms freeze better after cooking than when raw. Slice and sauté them until their released liquid evaporates, cool them, and freeze in a sealed container; use thawed mushrooms in cooked dishes.
A Portobello mushroom and a cremini mushroom are the same species at different stages of maturity: Portobellos are the larger, fully mature form. Creminis are smaller and younger, so they are often sold whole for everyday cooking.
Vitamins
Biotin
13.44µg · 45% DV
B2
0.34mg · 26% DV
B5
1.26mg · 25% DV
B3
3.78mg · 24% DV
Minerals
Copper
0.27mg · 30% DV
Selenium
16µg · 29% DV
Phosphorus
72mg · 10% DV
Potassium ⭐
306mg · 9% DV
Sodium
5.04mg · 0% DV
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
To burn the 18 calories in 1 piece (medium) (84 g):
🚶
Walking (5 km/h)
🏃
Running (8 km/h)
🚴
Cycling
🏊
Swimming
Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
A Portobello mushroom is a large, mature cultivated mushroom, with a broad cap and a substantial, tender texture. Its flavour is mild and earthy, becoming more savoury when cooked. It is especially popular grilled or roasted, often served whole as a main or used in place of a burger patty; stuffing the cap is another common preparation. You can also slice it into pasta, salads or grain bowls.
Portobello mushrooms are low in calories and provide fibre, selenium and B vitamins; 100 g contains 22 calories. For a lighter meal, grill or roast one with a little oil and serve it with vegetables or a grain-based side.
High
How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.
Medium
An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.
Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.
NOVA 1
Unprocessed
1. Unprocessed
2. Minimally Processed
3. Processed
4. Ultra-Processed
NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.
No known major allergens
Vegan
✓ Suitable
Vegetarian
✓ Suitable
Gluten-Free
✓ Suitable
Dairy-Free
— Not suitable
Mediterranean
✓ Suitable
Paleo
✓ Suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
✓ Suitable
Low FODMAP
— Not suitable
SATURATED
0.04g
MONOUNSATURATED
0.01g
POLYUNSATURATED
0.14g
Omega 6:3 ratio 13:1
Above the ideal 4:1 (13:1).
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Nutrition data compiled from USDA FoodData Central and scientific sources.