How to clean slippery jacks fast, without sticky hands

The slippery jack is a generous mushroom, but it has one annoying trait: it's a chore to clean. The slimy skin sticks to your hands, your knife and everything it touches, and your fingers turn black afterward. That's why many foragers even avoid slippery jacks, though there's no need to.

In fact, cleaning slippery jacks is quick work once you know a few simple tricks. The main one is so simple it changes everything. Let's walk through the whole process step by step.

The golden rule: don't wash before cleaning

The most common beginner mistake is washing the slippery jacks the moment you get home. Don't do it.

Wet skin gets even slimier, the mushroom slips out of your hand and the knife slides. A dry cap, on the other hand, is easy to clean: the skin gives way and peels off in strips. So the rule is simple: clean them dry first, then wash.

Ideally, tackle your slippery jacks right after the forest, before they sit around and get even stickier. A fresh, dry mushroom gives way fastest.

How to remove the slimy skin

The process itself isn't hard; the key is getting the hang of it on the first few mushrooms.

1. Hold the mushroom cap side up.
2. Use a knife to lift the edge of the slimy skin near the rim of the cap.
3. Press the skin against the blade with your thumb and pull toward the center; it will come off in a strip.
4. Repeat all the way around until the cap is clean and matte.

On young slippery jacks the skin comes off especially easily, almost as a single whole "cap". On old ones it's harder, which is why they're usually not picked anyway. While you're at it, check the stem and cap for maggots and cut away any damaged parts.

How to keep your hands from turning black

The slime and skin pigments stain your fingers a dark brown, almost black color that's hard to wash off later. Here are a few ways to deal with it.

• Gloves. The easiest option is to work in thin household gloves.
• A dry cloth. Keep a cloth or paper towel nearby and wipe the slime off your hands and knife now and then.
• Oil or vinegar. If your fingers have already darkened, it helps to rub them with vegetable oil or a little lemon juice or vinegar, then wash with soap.

These little things save your nerves and make cleaning much more pleasant.

When you can leave the skin on

Not all slippery jacks need a full cleaning.

Drier relatives, such as the bovine bolete or the velvet bolete, have skin that barely peels, so a wipe and a rinse is enough. But the classic slimy slippery jacks are better peeled, especially if you plan to fry or pickle them.

For drying, the skin is often left on, since it will dry out anyway and there's no point in extra fuss. Let what you're going to cook guide you here.

After cleaning

Rinse the cleaned slippery jacks in cold water to wash off leftover pine needles and sand, and get straight to cooking or preserving. Slippery jacks spoil quickly, so don't leave them for long, even in the fridge.

If you've picked a lot, don't put it off: we cover how to fry, pickle and dry them separately. And when you head out for a new batch, check the weather with our mushroom radar: it shows when moisture and warmth line up well for mushrooms to appear in coniferous and mixed forests.

Sources

• "Key to the Fungi of Ukraine" (Kyiv, Naukova Dumka publishing house).
• Suillus luteus on GBIF, a global biodiversity database.
• Suillus on MycoBank, an international fungal nomenclature database.
• Suillus luteus on Wikipedia.