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    Ingredient guide · Ingredient reference

    Mushroom calories: raw, boiled and dried are different entries

    Plain mushrooms have modest energy per 100 g in these records. Added cooking fats and a dried-versus-fresh comparison can change the final dish substantially.

    Read the evidence ↓

    Supplement Science Insights Editorial Team

    Published September 23, 2026

    Selected mushroom records

    USDA SR Legacy lists raw white mushrooms at 22 kcal per 100 g, boiled drained white mushrooms without salt at 28 kcal, raw shiitake at 34 kcal and dried shiitake at 296 kcal. These are separate food entries, not measured stages of one cooking experiment. [1]

    Count what was added

    A sautéed dish can include oil, butter, cream or other ingredients. The plain boiled-mushroom entry does not include them. Likewise, a100 g dried portion is not equivalent to 100 g fresh mushrooms because water content differs. Use a matching recipe or sum its components when estimating the finished dish. [2]

    A hypothetical plain portion

    At150 g, boiled drained white mushrooms give about 42 kcal using this record. Ten grams of dried shiitake gives about 29.6 kcal before other ingredients. These calculations retain preparation and edible mass; neither is a weight-loss promise. [1]

    Hypothetical example — calculate specified food portions from historical reference data
    Hypothetical portionEnergy estimate
    Boiled drained white mushrooms,150 g42 kcal
    Dried shiitake,10 g29.6 kcal
    Mushroom calories: raw, boiled and dried are different entries — original article outline diagram
    Original editorial diagram of this article’s sections; no product photograph or clinical finding is depicted.

    Sources for this article

    1. USDA FoodData Central — SR Legacy April 2018 composition and portion tables
      Source consulted: 2026-09-20. This is a reference resource, not a claim that we conducted the studies or tested a product.
    2. How to Understand and Use the Nutrition Facts Label | FDA
      Source consulted: 2026-09-20. This is a reference resource, not a claim that we conducted the studies or tested a product.