Pleurotus ostreatus var. columbinus
A cool-toned cluster with a meaty bite — the variety that built this operation.
Blue Oyster is the variety Moonlit Mycelium started with — chosen for its vigor, its forgiving nature in a new grow room, and a flavor that holds up to high heat. The caps emerge a deep blue-grey and lighten as they mature, fanning out in dense, overlapping clusters along the substrate.
Expect a firm, almost meaty texture and a savory depth that deepens dramatically when seared. This is the mushroom for people who say they don't like mushrooms.
Pull clusters apart by hand along their natural seams rather than slicing — it keeps more surface area for browning.
Start in a hot, dry pan with no oil for 2-3 minutes. Oysters hold a lot of water, and this step drives it off before searing.
Once the pan is dry, add butter or oil and let the edges go deep golden brown. This is where the flavor happens.
Salt early and the mushroom weeps. Season after it's browned for the best texture.
| Method | Duration | Notes |
|---|---|---|
| Refrigerated, paper bag | 5–7 days | Avoid plastic — it traps moisture and speeds spoilage |
| Dehydrated, sealed | 12+ months | Rehydrate in warm water 15–20 min before cooking |
| Frozen, sautéed first | 6 months | Cook before freezing — raw oysters don't freeze well |
Indirect light, away from direct AC or heater vents, somewhere you'll walk past daily.
Use a clean blade to cut 2–3 inch X-shaped slits where you see white patches pressing against the bag.
A light mist over the slits in the morning and evening keeps the developing pins from drying out.
Tiny grey nubs will appear at the slits within 3–7 days — that's your first flush starting.
Pick when caps have flattened but before edges start curling upward — usually 5–7 days after pinning.
Your block may produce two to three flushes total. The second flush, about 10–14 days after the first harvest, is often nearly as large as the first. Keep misting between flushes — don't let the block dry out while it rests.
Fresh blue oyster, grow kits, and small-batch dried mushrooms — every week at the West Plains Farmers Market Co-op.
Explore All Varieties