Woolly milk caps (white and pink): are they edible, and how to recognize them

The woolly milk cap is easy to spot by its fluffy, almost woolen cap — hence the name. It's a relative of the classic milk caps, with milky latex, and people have salted it for winter for centuries. It's conditionally edible and needs proper preparation, but if you know its features, it's a reliable autumn harvest.

Let's look at how to recognize the woolly milk cap, where it grows and how to prepare it safely.

Pink and white woolly milk caps

Two species are the most common:

• Woolly milk cap (pink). The cap is pinkish with concentric zones and an inrolled, fluffy-shaggy margin. Its favorite tree is birch.
• Bearded milk cap (the white one). Smaller, whitish or cream, also with a fluffy margin; it grows in damper spots.

When broken, both release white, acrid milky latex — the key trait of the genus.

How to recognize the woolly milk cap

• Cap with a depressed center and a fluffy, shaggy margin; pink or whitish, often zoned.
• Gills whitish-pink, running down the stem.
• Stem short, firm, the same color as the cap.
• Milky latex white, acrid, doesn't change color in the air.

The fluffy margin is what instantly sets the woolly milk cap apart from smooth brittlegills and many milk caps.

Where and when it grows

The woolly milk cap is closely tied to birch, so look for it in birch and mixed forests, on forest edges and in damp spots. The season runs from August to October, often in large groups. It's a typical autumn relative of the milk caps.

Is it edible, and how to cook it

The woolly milk cap is conditionally edible: because of its acrid latex, it's never eaten fresh. It's prepared like other milk caps — salted:

1. Soak for several days in cold water, changing it often.
2. Boil, draining the water.
3. Salt.

Once salted, the woolly milk cap turns crunchy and fragrant. Pick young, firm mushrooms.

What to watch out for

• Don't eat it fresh. Without soaking, the acrid latex causes an upset stomach.
• The fluffy margin is the key. It's the main feature of the woolly milk cap.
• Only near birches. The pink woolly milk cap almost always grows under birch.

Sources

• “Key to the Fungi of Ukraine” (Kyiv, Naukova Dumka publishing house).
• Lactarius torminosus in GBIF, the Global Biodiversity Information Facility.
• Lactarius torminosus in MycoBank, the international fungal nomenclature database.
• Lactarius on Wikipedia.