Honey Mushroom

The short version. Honey mushroom is a wild, clustered, honey-coloured mushroom that is eaten cooked in parts of Europe and Asia. It is a food, not a supplement: we found no human trial and no standard supplement product. It must be cooked thoroughly, and even then some people get stomach upset. [1][2] The most important safety point is the look-alike: honey mushrooms have been mistaken for Galerina, a small brown mushroom that can destroy the liver. [3] Most of what is written about its "health effects" comes from cell dishes and mice. [4]

Two separate questions. Eating the mushroom as food is one question (cooking, upset stomach, look-alikes). Taking a concentrated product is another, and for this mushroom there is no human evidence at all for the second.

What it is

Armillaria mellea is a fungus that lives on and kills trees and rots wood, and it produces clusters of mushrooms in autumn. It belongs to a large genus: a 2026 review says more than 40 species are recognised, and that DNA from one gene region alone cannot reliably tell them apart. [4] So "honey mushroom" in a book, a market or a paper may mean A. mellea or one of its relatives. In China the species is called "hazel mushroom". [4] A published Chinese survey reports at least 15 lineages there, seven of which are linked to the orchid farming described below. [4]

The "humongous fungus". One relative, Armillaria ostoyae, in Oregon's Malheur National Forest is often called the largest living thing. A science magazine reports a single colony of about 2,385 acres, around 35,000 tons, and an age estimate of about 8,650 years, but the figures cover only the part scientists have identified, because most of the fungus is underground, and some experts dispute whether it is "one organism" at all. [7] We could not open the original scientific papers, so treat these as press-reported estimates. This is a tree-disease story; it says nothing about eating or health.

Wild mushrooms cannot be safely identified from a description, and this page gives no identification help. Do not identify wild fungi from text or an app.

As a food

• Role as food. The fruiting body is described as fleshy and tasty and is used in Chinese cooking, for example braised with chicken. [4] The Missouri Department of Conservation calls it a good edible when young and fresh. [2]
• Cooking is required. The same state agency says to cook it thoroughly, to try only a small amount the first time, and notes that it causes stomach upset in some people. [2]
• How common is the upset? A Wisconsin poison-centre review of 18 reported honey mushroom meals over 25 years found vomiting or diarrhoea in 83% of cases, starting between about 15 minutes and 7.5 hours after eating and lasting about 2 to 41 hours. Five people went to an emergency department, one was briefly admitted, and no one had organ failure or died. Some became ill even though the mushroom had been cooked. [1] This is a small group of reported cases, so it cannot tell you how often it happens in all eaters. We only read the abstract.
• Nutrition. USDA FoodData Central has no honey mushroom entry. The only table we found (a 2026 review quoting an earlier paper) lists per 100 g dry weight about 81 g carbohydrate, 1.8 g crude protein, 2 g fat and 8.8 g ash. [4] The low protein figure sits oddly beside the same review's call for the mushroom as high in protein, so treat the table as unverified. Mannitol is named as the main free sugar. [4]

Traditional use and the tian ma orchid

There is a real traditional-medicine connection, but it is to an orchid, not to the mushroom. Gastrodia elata (tian ma) has no roots or leaves and cannot feed itself; after germination it must form a partnership with Armillaria mellea to grow. [5] The orchid tuber is the traditional medicine, listed in a 2026 review for calming "liver wind", dizziness, limb numbness, convulsions and high blood pressure, and added to China's list of foods that are also medicines in 2023. [5] Commercial growers therefore farm Armillaria as a feeder for the orchid. [4] Those uses belong to the orchid. We found no source for a traditional medicinal role of the mushroom itself, and eating honey mushroom should not be expected to do what tian ma is used for.

What research shows

Fruiting body, mycelium and grain products

Most of the chemistry papers use mycelium grown in a lab, because the melleolides are mostly made there. [4] A cultured mycelium is not the same as the fruiting body that is eaten, and a "mycelium on grain" product would add grain starch; see fruiting body vs mycelium and mycelium grown on grain. We found no consumer honey mushroom supplement with trial data.

Forms you may see

• Fresh, thoroughly cooked fruiting body: the only food form with a safety track record, in the sense above. [1][2]
• Dried fruiting body: used in cooking; no nutrient data read.
• Cultured mycelium: used as a feeder for tian ma and as a lab material. [4]
• Extracts and powders: we did not find a human-use product with data, so we make no claims.

Lab data and chemistry

A. What the laboratory literature reports in this mushroom. The Wikidata/LOTUS database lists 97 compounds for Armillaria mellea (taxon Q473745). [8] Almost none of these statements carries a paper reference in the file we read, so we did not check them against the original work. A presence entry means "reported in at least one study of this species", not "present in every mushroom you eat". We list a selection.

B. Measured values. USDA FoodData Central has no honey mushroom entry (not in the file we checked).

C. What the numbers do and do not mean.

• A compound in the list is a lab finding, not a health effect. Nothing here shows that eating honey mushroom does anything for the body.


• Values differ by species (the genus is large), by wild versus cultivated origin, by whether it is fruiting body or mycelium, and by method. The two mineral tables above (one dry basis unknown, one fresh weight) cannot be compared directly.


• The melleolides come mostly from lab-grown mycelium and are tested as purified compounds, not as a food portion. [4]


• Wild-grown mushrooms carry the metals of their soil and wood, so one Romanian result is not a general rule. [6]

Related pages

• Cooking edible mushrooms safely
• Mushroom poisoning and urgent help
• Shaggy mane
• Chanterelle
• Fruiting body versus mycelium