Raw chanterelles provide 0.353 mg of copper, 506 mg of potassium, 0.286 mg of manganese, and 2.2 μg of selenium per 100 grams, according to USDA data — a genuinely dense trace mineral profile for a low-calorie food. What chanterelles are notably low in, despite common assumptions about wild mushrooms, is ergothioneine, the antioxidant amino acid that porcini and shiitake concentrate at much higher levels.
Copper and Manganese: The Standout Trace Minerals
Chanterelles contain 0.353 mg of copper per 100 grams, a meaningful contribution toward the roughly 900 microgram daily copper requirement for adults. Copper functions as a cofactor for enzymes involved in iron metabolism, connective tissue formation, and antioxidant defense. Manganese, at 0.286 mg per 100 grams, supports a separate set of antioxidant enzymes and bone-related metabolic processes — together, these two trace minerals are where chanterelles' mineral density is most notable relative to common cultivated mushrooms.
Iron: The Figure That Gets Overlooked
Chanterelles carry roughly 3.5 mg of iron per 100 grams in USDA figures, which is high for a vegetable-category food and arguably the most striking single number in the profile. For comparison, that sits in the same territory as many legumes.
Two caveats keep this honest. Mushroom iron is non-haem iron, the form found in plant foods, which the body absorbs less efficiently than the haem iron in meat — absorption improves when eaten alongside a vitamin C source and is inhibited by tea, coffee and calcium taken at the same meal. And this is a per-100-gram figure for raw weight. Chanterelles are mostly water, so a realistic portion delivers a fraction of the headline number.
It's still a genuine contribution, and one that pairs neatly with the copper content, since copper is required for iron metabolism. But "high in iron" and "a practical iron source" are different claims, and only the first is straightforwardly true here.
Potassium and Selenium
At 506 mg per 100 grams, chanterelles provide a respectable potassium contribution for a low-calorie food, relevant to normal muscle and cardiovascular function. Selenium, at 2.2 micrograms per 100 grams, is more modest — useful but not a standout compared to genuinely selenium-dense foods like Brazil nuts, so chanterelles shouldn't be relied on as a primary selenium source the way they can reasonably be relied on for copper and manganese.
Vitamin D2: The Nutrient Sunlight Changes
Chanterelles are among the better natural food sources of vitamin D, carrying vitamin D2 (ergocalciferol) at levels that stand out sharply against most non-fortified foods — USDA figures put raw chanterelle in the region of 5 micrograms per 100 grams, where most vegetables contain essentially none.
The mechanism is worth knowing because you can act on it. Mushrooms contain ergosterol, which converts to vitamin D2 on exposure to ultraviolet light — the same reaction that happens in human skin with a different precursor. This means the vitamin D content of a given batch is not fixed. Mushrooms grown or dried in sunlight develop substantially more than those kept in the dark, and commercially UV-treated mushrooms are produced specifically to exploit this. Drying chanterelles outdoors rather than in a dehydrator is, in effect, a vitamin D step.
Vitamin D2 is somewhat less effective than the D3 form at raising and maintaining blood levels, so this is a useful contribution rather than a replacement for other sources during winter at northern latitudes. It remains one of the few genuinely notable plant-kingdom sources.
What Chanterelles Don't Have Much Of: Ergothioneine
Ergothioneine is a mushroom-derived antioxidant amino acid that's received considerable research attention, and it's reasonable to assume a nutrient-dense wild mushroom like chanterelle would be a strong source. It isn't. Research measuring ergothioneine across mushroom species found porcini (Boletus edulis) reaching as high as 7.27 mg per gram dry weight, with shiitake and other Lentinus, Grifola, and Agrocybe genus mushrooms also ranking notably high — while chanterelle (Cantharellus cibarius) was found to contain negligible amounts by comparison (Dubost et al., 2007).
Macronutrients, and Why the Protein Figure Misleads
Chanterelles are low-calorie — around 38 kcal per 100 grams — with roughly 1.5 grams of protein and a useful fibre contribution. They are close to 90% water, which is the single most important fact for interpreting every other number on the list.
The protein figure deserves a caveat that applies to mushrooms generally. Standard nutritional analysis estimates protein from nitrogen content, and mushroom cell walls contain chitin, a nitrogen-containing structural carbohydrate that is not protein and that humans do not digest. This inflates the reported protein value relative to what the body can actually use. Mushrooms are not a meaningful protein source regardless, so little rides on it, but the number is softer than it appears.
The fibre, by contrast, is real and includes beta-glucans — the polysaccharides responsible for much of the research interest in mushrooms generally.
Carotenoid Pigments and B Vitamins
The apricot colour comes from carotenoid pigments, canthaxanthin among them, which is unusual in the fungal kingdom and part of why chanterelles are visually distinctive in the first place. The pigments are fat-soluble, which is a small argument for cooking them in butter or oil rather than water alone.
On the B-vitamin side, chanterelles are a solid source of niacin (vitamin B3) at around 4 mg per 100 grams, alongside riboflavin and pantothenic acid. These are the least-discussed part of the profile and among the more reliable, since B vitamins are reasonably stable through normal cooking — though water-soluble, so a blanching step does cost some.
The Cadmium Consideration — And How Preparation Reduces It
Like many wild mushrooms, chanterelles bioaccumulate cadmium from forest soil, with one study measuring concentrations between 0.17 and 0.27 mg/kg dry biomass in wild-harvested specimens. This is a real consideration for people who forage or eat chanterelles frequently, though it's manageable through preparation. The same 2017 study found that blanching alone reduced cadmium content by 11-40%, and pickling after blanching removed an additional 37-71%, for a combined cadmium reduction of 77-91% compared to raw mushrooms (Drewnowska et al., Environmental Science and Pollution Research International, 2017).
This is a genuinely useful, practical finding: traditional preparation methods that predate any awareness of heavy metal chemistry — blanching and vinegar-based pickling — happen to substantially reduce cadmium exposure from chanterelles, which is a meaningfully different risk profile than eating them raw or lightly sautéed without a blanching step.
Putting the Cadmium Numbers in Context
Accumulation is not uniform, and where a mushroom grew matters more than that it was wild. Proximity to roads, former industrial land, mine spoil and areas with naturally cadmium-rich bedrock all raise levels, and different species differ enormously in how much they take up — chanterelles are moderate accumulators rather than extreme ones. Some other wild genera are far worse.
European food safety assessment works from a tolerable weekly intake for cadmium of 2.5 micrograms per kilogram of body weight, covering total dietary exposure from all sources rather than mushrooms alone. Cadmium's concern is cumulative: it has a long biological half-life and accumulates in the kidneys over decades, which is why the guidance is framed weekly rather than per meal.
The sensible reading is proportionate. Occasional chanterelle meals from clean ground are not the issue. Frequent, large servings of wild mushrooms from unknown or industrially affected sites, eaten across years, are where the calculus changes — and blanching is a cheap hedge either way. Anyone eating foraged mushrooms in real quantity should also read the heavy metals in mushroom supplements guide, since the same accumulation chemistry drives sourcing standards for supplements.
Fresh Versus Dried: Reading the Numbers Correctly
Nearly every figure above is per 100 grams of raw mushroom, and that unit does a lot of quiet work. Because chanterelles are around 90% water, drying concentrates everything roughly tenfold by weight — minerals, fibre and cadmium alike. A number quoted "per 100 g dried" is not comparable to one quoted "per 100 g fresh," and this is a common source of confusion in mushroom nutrition writing, including the cadmium literature, where dry-biomass figures are standard.
The practical translation: a generous fresh portion of perhaps 80 grams delivers something under a fifth of the daily copper requirement and a modest slice of the iron figure. Chanterelles are a nutritionally interesting food and a genuinely good source of a few specific things. They are not a mineral supplement, and portion reality is the reason.
How This Compares to Common Cultivated Mushrooms
White button, cremini, and portobello mushrooms are cultivated for consistency and shelf life rather than mineral density, and generally show lower copper and manganese content than chanterelles on a per-gram basis. Chanterelles' mineral profile, combined with their vitamin D2 and carotenoid content discussed in the chanterelle health benefits overview, is part of why wild mushrooms are increasingly discussed as nutritionally distinct from their cultivated counterparts rather than nutritionally interchangeable with them.
The trade-off runs both ways, though. Cultivated mushrooms are grown on controlled substrate, so they carry essentially none of the heavy-metal variability that comes with forest soil, and shiitake substantially outperforms chanterelle on ergothioneine. Neither category is simply better — they are different profiles with different caveats, which is a more useful framing than the wild-versus-cultivated hierarchy these comparisons usually imply.
Frequently Asked Questions
What minerals are chanterelle mushrooms high in?
Chanterelles are notably dense in copper (0.353 mg per 100g) and manganese (0.286 mg per 100g), with a respectable potassium contribution (506 mg per 100g), around 3.5 mg of iron, and modest selenium content (2.2 μg per 100g), according to USDA data.
Are chanterelles a good source of vitamin D?
Yes, unusually so for a food that isn't fortified — they contain vitamin D2, around 5 micrograms per 100 grams in USDA figures. The amount isn't fixed: mushrooms convert ergosterol to vitamin D2 under ultraviolet light, so sun exposure during growth or drying raises the content considerably.
Do chanterelles contain ergothioneine?
Only in negligible amounts. Research comparing ergothioneine across mushroom species found porcini and shiitake contain substantially higher levels, while chanterelle measured negligible by comparison — despite chanterelle's strength in other nutrients like copper, manganese, and vitamin D2.
Is cadmium in chanterelles a health concern?
Chanterelles bioaccumulate cadmium from soil at measured levels of 0.17-0.27 mg/kg dry biomass in wild specimens. This is manageable through preparation — a 2017 study found that blanching followed by pickling reduced cadmium content by 77-91% compared to raw mushrooms. Levels depend heavily on where the mushroom grew, and the concern is cumulative lifetime intake rather than any single meal.
Does cooking method affect chanterelle's mineral content?
Preparation methods like blanching and pickling primarily affect cadmium content, substantially reducing it, rather than the beneficial trace minerals like copper and manganese, which are generally more heat-stable and less affected by these same preparation steps. Water-soluble B vitamins do take a modest loss during blanching.
Are chanterelles a good source of protein?
Not really. They contain roughly 1.5 grams per 100 grams, and standard analysis overstates even that, because it estimates protein from nitrogen and mushroom cell walls contain chitin — a nitrogen-containing carbohydrate humans don't digest. Their fibre content, including beta-glucans, is the more meaningful macronutrient contribution.
How do chanterelles compare to cultivated mushrooms nutritionally?
Chanterelles generally show higher copper and manganese content than common cultivated mushrooms like white button or cremini, alongside notable vitamin D2 and carotenoid content. Cultivated mushrooms, grown on controlled substrate, carry far less heavy-metal variability — so the two are different profiles with different trade-offs rather than one being simply better.
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Sources
- US Department of Agriculture, Agricultural Research Service. FoodData Central: Mushrooms, chanterelle, raw. fdc.nal.usda.gov
- Dubost NJ, Ou B, Beelman RB. Quantification of polyphenols and ergothioneine in cultivated mushrooms and correlation to total antioxidant capacity. Food Chem. 2007;105(2):727-735.
- Drewnowska M, Hanć A, Barałkiewicz D, Falandysz J. Pickling of chanterelle Cantharellus cibarius mushrooms highly reduce cadmium contamination. Environ Sci Pollut Res Int. 2017;24(27):21733-21742. PubMed 28762197
- EFSA Panel on Contaminants in the Food Chain. Scientific Opinion on tolerable weekly intake for cadmium. EFSA Journal. 2011;9(2):1975. EFSA Journal 1975
- Cardwell G, Bornman JF, James AP, Black LJ. A review of mushrooms as a potential source of dietary vitamin D. Nutrients. 2018;10(10):1498. PubMed 30322118