MycoNote

This English version was machine-translated from Ukrainian, so a few things may read a little off.

Menthol brittlegill (Russula albonigra)
Photo: Ron Pastorino (Ronpast) · CC BY-SA 3.0 · source
Edible

Menthol brittlegillRussula albonigra

Expert-verified

Updated June 13, 2026

Passport

Edibility
Edible
Season
Jul — Oct
Hymenophore
Gilled
Cap color
White
Size
Medium (5–15 cm)
Smell
Pleasant
Reviewed
Yes ✓

Quick answers

Where to look?

Deciduous forest, Mixed forest

When does it appear?

Jul — Oct

Active months: July, August, September, October.

How to recognize it? Three signs

  • Cap color: White, Grey, Black
  • Cap shape: Depressed
  • Smell: Pleasant

Fruiting season

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

July – October

Description

The menthol brittlegill (Russula albonigra) is a close relative of the blackening brittlegill with a striking two-tone look: the young cap is pure white and over time turns gray-black, but without the intermediate reddish stage seen in R. nigricans. When cut, the flesh blackens right away, with no red stage — and that's what sets the species apart. The Latin name literally means "white-black".

Edible, similar in the kitchen to the blackening brittlegill. Young flesh is firm, with a neutral taste, and fine after boiling. Good for pickling and frying, but because it blackens in the pan, the dish comes out dark gray. Skip old specimens.

In Ukraine it occurs in deciduous and mixed forests: the Carpathians, Prykarpattia, Polissia. A mycorrhizal partner of beech, oak, less often spruce. Season: July — October. Less common than the blackening brittlegill, but found reliably.

Cap

Cap 6-15 cm across; in young mushrooms hemispherical to flat with an inrolled margin, later becoming funnel-shaped. Color pure white when young, turning gray, ash-gray, then blackish with age. Surface smooth, slightly sticky in wet weather.

Hymenophore

Gilled hymenophore — the gills are attached to the stem, moderately crowded (unlike R. nigricans, where they are distant). In young mushrooms — whitish, when damaged they blacken with no red stage. Spore print white.

Stem

Stem 3-7 cm tall, 1.5-3 cm thick, thick, cylindrical. Color white when young, gray to blackish with age. Surface smooth. No ring.

Flesh

Flesh firm, fleshy, white when young. When cut, it blackens IMMEDIATELY to gray-black, with no red stage — the key difference from R. nigricans. Faint, pleasant mushroomy smell.

Smell

Faint, pleasant, mushroomy, with no distinctive notes.

Lookalikes

Mushrooms of the same genus and habitat — to study side by side and never mix up.

Related reading

Frequently asked questions

Is it safe to eat?

Yes, young mushrooms with white flesh, after boiling for 10-15 min. Skip old specimens. Culinary value is moderate — the flesh blackens during cooking.

How do you tell it from the blackening brittlegill?

By how the flesh reacts when cut. In the menthol brittlegill (R. albonigra) — it blackens IMMEDIATELY to gray-black, with no red stage. In the blackening brittlegill (R. nigricans) — it first reddens to wine-red, then blackens. A second feature: the menthol brittlegill has crowded gills, the blackening one — distant, thick ones. Both are edible, so a mistake isn't critical.

Does it have dangerous lookalikes?

None serious. All white-fleshed brittlegills in our flora are edible. The only key distinction is from young amanitas (white gills + ring + volva) — but amanitas don't darken so noticeably when damaged.

Where should you look for it?

In deciduous and mixed forests — mostly under beech, oak and hornbeam, less often in mixed forests with spruce. It likes damp, mossy forest edges.

Which regions of Ukraine is it found in?

Mostly in the forest zone: the Carpathians, Prykarpattia, Polissia. Less common than the blackening brittlegill, but reliably present.

When should you look for it?

July — October, peaking in August–September.

What mushrooms is it confused with?

Most often — with the blackening brittlegill (R. nigricans) (see above). With the milk-white brittlegill (R. delica) — also white and also edible, but they don't blacken when cut. With milk caps (Lactarius) — those ooze milky latex when cut.

How do you cook it?

Pickling young mushrooms is the best approach. Boil for 10-15 min before pickling. Stewing with potatoes. Frying — fine, but the dish will be dark gray.

Is Menthol brittlegill edible or poisonous?
Menthol brittlegill is edible. Before eating any wild mushroom, always double-check current information in reliable sources and consult an expert.
Does Menthol brittlegill have gills or pores?
The spore-bearing surface (hymenophore) of Menthol brittlegill: gilled.
What does the cap of Menthol brittlegill look like?
Cap 6-15 cm across; in young mushrooms hemispherical to flat with an inrolled margin, later becoming funnel-shaped. Color pure white when young, turning gray, ash-gray, then blackish with age. Surface smooth, slightly sticky in wet weather.
What does the stem of Menthol brittlegill look like?
Stem 3-7 cm tall, 1.5-3 cm thick, thick, cylindrical. Color white when young, gray to blackish with age. Surface smooth. No ring.

Sources

  • [1]Вікіпедія (українська)
  • [2]Атлас грибів України, Зеров Д.К. (1979)
  • [3]MycoBank Database
  • [4]Index Fungorum
  • [5]GBIF
  • [6]iNaturalist Ukraine