Home / Species Database / Witches' Butter

How to Identify Witches' Butter

Tremella mesenterica
EDIBLE* Season // Jan-Dec Family // Unknown

Description

Witches Butter is a bright golden-yellow to orange jelly fungus forming irregular brain-like or folded masses 2-8 cm across. The fruitbody is gelatinous, translucent, with a convoluted surface resembling a brain or folded intestines. Color is bright golden-orange to yellow when fresh and moist, becoming darker orange and shriveled when dry. Texture is soft, trembling, and jelly-like. Revives and swells when rehydrated. No distinct stem or cap structure.

Specimen Profile

FamilyUnknown
GenusTremella
EdibilityEdible*
Toxicityunknown
SeasonJan-Dec
HabitatFound on dead branches and twigs of hardwood trees, particularly oak, beech, and other deciduous species. Grows as a parasite on crust fungi (particularly Peniophora species) that colonize dead wood. Fruits on fallen branches, standing deadwood, and bark. Common in forests, woodlands, and parks. Prefers moist conditions.
RegionEurope (widespread), Eastern North America (common), Pacific Northwest (common), California (occasional), Worldwide in temperate regions, Particularly common in Britain

Habitat & Distribution

Habitat: Found on dead branches and twigs of hardwood trees, particularly oak, beech, and other deciduous species. Grows as a parasite on crust fungi (particularly Peniophora species) that colonize dead wood. Fruits on fallen branches, standing deadwood, and bark. Common in forests, woodlands, and parks. Prefers moist conditions.

Region: Europe (widespread), Eastern North America (common), Pacific Northwest (common), California (occasional), Worldwide in temperate regions, Particularly common in Britain

Seasonality

Year-round in areas with mild wet weather, but most abundant in fall through spring (October-April). In temperate regions, primarily winter and early spring (November-March). Can fruit during summer after heavy rains. Peak during cool wet periods.

Typical months: Jan-Dec

Common Lookalikes

Always verify identification to avoid these similar species. The differentiator is the point — learn the one or two tells that separate them:

Tremella aurantia (edible)

HOW TO TELL APART

similar but bright orange, parasitic on Stereum

Dacrymyces species (edible)

HOW TO TELL APART

smaller, more orange, on conifer wood

Calocera viscosa (edible)

HOW TO TELL APART

coral-like branches not brain-like

No toxic lookalikes among jelly fungi

BROWSE ALL SPECIES →

Track your Witches' Butter finds

Pin the patch before you leave it. Coordinates, photos, and field notes stay on your device — and the offline lookalike guide travels with you into the deep woods.

Download Mushroom Tracker

Disclaimer: This guide is for educational purposes only. Never consume a wild mushroom unless you are 100% certain of its identification.