Black King Oyster Shroombag | Mushroom Grow Kit | Grill-Worthy
Most mushrooms shrink when you cook them. Black King Oyster it holds its ground.
This strain is a cross of Pleurotus eryngii x Pleurotus ostreatus x Pleurotus nebrodensis. It is cultivated for its thick, dense stems and substantial caps. Where other oyster varieties fan out in delicate petals, Black King Oyster builds mass. The stems are firm enough to slice into medallions, sear cut-side down in a hot pan, and serve as the center of a plate. Not a garnish, not a side, the main event.
The flavor is deep and umami-forward with an earthiness that comes through whether it's roasted, grilled, or braised. Among all five ShroomBag varieties, this one has the longest shelf life and the most forgiving harvest window. The caps don't sprint toward sporulation the way oysters do. You have more time.
It takes a little longer to arrive: around 14 days from cut to harvest. That patience gets rewarded with the most substantial yield in the lineup by weight.
Grown on locally sourced Appalachian hardwood. Two flushes indoors, more when composted outdoors.
Grow Specs & Reference Data
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Days to First Flush |
14 days |
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Second Flush |
3–5 weeks after first harvest |
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Yield Per Flush |
½–1+ lb of fresh mushrooms |
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Optimal Temperature |
60–75°F |
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Scientific Name |
Pleurotus eryngii x Pleurotus ostreatus x Pleurotus nebrodensis |
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Distinguishing Feature |
Dense, thick stems, holds structure under high heat. Widest harvest window of the 5 varieties. |
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Substrate |
Locally sourced Appalachian hardwood sawdust |
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Flavor Profile |
Deep umami, earthy, grills, roasts, and braises exceptionally well |
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Culinary Use |
Medallion steaks, grilled skewers, risotto, braised dishes |
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Guarantee |
30-day satisfaction guarantee |