Nutrition referenceKing oyster mushroom is a large, thick-stemmed mushroom with a mild, savory flavor. Per 100 g it provides about 46 calories with 8.5 g carbs and 3 g fiber.
Nutrition facts
2003599 · Foundation Foods, April 2026 (2026-04-30 export)
08025 · Standard Tables of Food Composition in Japan, Eighth Revised Edition, Supplement 2023; official workbook updated 2026-03-27
About this food
King oyster mushroom, also called king trumpet mushroom, is a large edible mushroom with a thick stem and small cap. It has a mild, savory flavor and a firm, meaty texture.
Nutritionally, king oyster mushroom is low in fat. Per 100 g it provides about 46 kcal, 8.5 g of carbohydrates, 2.4 g of protein, 0.3 g of fat, and 3.0 g of dietary fiber.
King oyster mushrooms are usually sliced and sautéed, grilled, or roasted. For accurate tracking, weigh the mushroom and use the serving sizes below.
Plan your portion
Nutrition values are reported per 100 g. A typical mushroom (about 55 g) provides roughly 26 kcal. Use the serving sizes below to estimate portions when logging.
| Serving | Weight | Calories | Carbs | Protein | Fat |
|---|---|---|---|---|---|
| 100 g | 100 g | 46.4 kcal | 8.5 g | 2.4 g | 0.3 g |
| 1 mushroom | 55 g | 25.5 kcal | 4.7 g | 1.3 g | 0.2 g |
| 1/2 cup sliced | 43 g | 20 kcal | 3.7 g | 1 g | 0.1 g |
Use the weight of the edible portion in the food state shown above.
Questions and answers
King oyster mushroom provides about 46 calories per 100 g.
Yes. King oyster mushroom provides only about 0.3 g of fat per 100 g.
King oyster mushroom provides about 2.4 g of protein per 100 g.
