Lion’s mane mushrooms.

What it is

Hericium erinaceus — a cream-white cushion covered in soft downward spines instead of a cap and gills. In the wild it grows out of wounds in hardwood; indoors it fruits as a dense rounded block. Nothing else in the produce world looks like it, which is half of why chefs put it on menus.

It is also the species with a second life: lion’s mane is the best known of the functional mushrooms, which means people arrive at it from two directions — cooks who want the texture, and readers who want to know what it does. Both are legitimate; the cooking is what we grow it for.

How it tastes, and how to cook it

Sweet and mild with a genuine crab or lobster character, and a fibrous structure that shreds into strands exactly like picked crab meat. It is the most convincing seafood substitute in the fungal kingdom and it does not need much help.

Press the water out. Lion’s mane is a sponge. Cut it into thick slabs, put them in a dry hot pan, and press them with a spatula or a second pan for the first two minutes — you will hear the water leave. Once the surface is dry and golden, add butter and finish. Skip the pressing and you get a wet, squeaky, spongy result, which is the single complaint everyone has the first time.

• Crab cakes. Shredded, squeezed dry, bound with egg and breadcrumb, Old Bay, fried.
• Steaks. Thick slabs, pressed and seared, lemon butter, capers.
• “Scampi”. Torn chunks in garlic butter and white wine, on bread.
• Crumbed and fried as a sandwich filler — it holds a bun better than chicken.

If it squeaks, it is undercooked and still full of water. Cook it past that point every time.

What to look for when you buy

• White to barely cream. Yellowing, especially at the top of the block, is the first sign of age; orange-brown is well past it.
• Spines intact and separate, not matted or clumped.
• Dry surface. Any tackiness or dark bruising at the base means it has been bagged too long.

Prep, yield and waste

Almost no trim — pull off any residual substrate at the base and use the entire block. Trim loss 2–3%, but expect real cooking shrink, because you are deliberately driving out water: a pound of fresh gives roughly ten ounces cooked. For chefs, the working numbers, portion sizes and plating notes are on the lion’s mane chef page.

Keeping it

Five to seven days at 34–38°F in paper, if it arrived dry-picked. It shows age faster than the oysters because the white surface yellows visibly. If you need to hold it longer, cook and freeze — pressed and seared slabs freeze well; raw does not.

Availability

Year-round from Longmont, in steady weekly volume, and one of the three species we can always supply. It appears fresh on the harvest board and, when the harvest overruns, as dried and in the functional line.

Common questions