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Black Truffle Oyster (Pleurotus ostreatus var. columbinus) is a spontaneous mutation of a blue oyster mushroom strain. It forms dense clusters of rounded, dark brown lobes instead of the usual caps, stems and gills. Its truffle-like shape gives it its name. The supplier describes the strain as sporeless, with a firm texture and a pronounced mushroom flavour.
Start with our Sterile Hardwood Mushroom Grow Bag. It arrives ready to inoculate, with a self-healing injection port and filter patch. Inject the liquid culture directly into the bag to skip preparing a separate batch of grain spawn.
Inoculate the bag. Work on a clean surface, sanitise the injection port and use a sterile needle. Follow our step-by-step liquid culture inoculation guide.
Let the block colonise. Keep the bag sealed until white mycelium has spread throughout the block. Once colonised, gently press excess air out through the filter, then fold and secure the top against the block to reduce air pockets where clusters could start forming.
Open a few small fruiting windows. Use a clean blade to make a few small cuts where you see raised patches of mycelium. Leave the rest of the bag in place to retain moisture. This variety develops rounded lobes, so look for small bumps rather than the usual oyster caps.
Keep fruiting conditions cool and humid. Aim for 5–18°C. Mushrooms tend to be firmer at the cooler end of that range. Provide fresh air and gentle circulation. Humidify the surrounding air and avoid spraying the clusters directly. See our guide to mushroom fruiting conditions.
If you already make grain spawn, inoculate sterile grain with the liquid culture, then mix the colonised grain into a supplemented hardwood substrate. Pasteurised straw or hardwood pellets are also options.
Supplied as a liquid culture syringe for inoculation.
Black Truffle Oyster (Pleurotus ostreatus var. columbinus) is a spontaneous mutation of a blue oyster mushroom strain. It forms dense clusters of rounded, dark brown lobes instead of the usual caps, stems and gills. Its truffle-like shape gives it its name. The supplier describes the strain as sporeless, with a firm texture and a pronounced mushroom flavour.
Start with our Sterile Hardwood Mushroom Grow Bag. It arrives ready to inoculate, with a self-healing injection port and filter patch. Inject the liquid culture directly into the bag to skip preparing a separate batch of grain spawn.
Inoculate the bag. Work on a clean surface, sanitise the injection port and use a sterile needle. Follow our step-by-step liquid culture inoculation guide.
Let the block colonise. Keep the bag sealed until white mycelium has spread throughout the block. Once colonised, gently press excess air out through the filter, then fold and secure the top against the block to reduce air pockets where clusters could start forming.
Open a few small fruiting windows. Use a clean blade to make a few small cuts where you see raised patches of mycelium. Leave the rest of the bag in place to retain moisture. This variety develops rounded lobes, so look for small bumps rather than the usual oyster caps.
Keep fruiting conditions cool and humid. Aim for 5–18°C. Mushrooms tend to be firmer at the cooler end of that range. Provide fresh air and gentle circulation. Humidify the surrounding air and avoid spraying the clusters directly. See our guide to mushroom fruiting conditions.
If you already make grain spawn, inoculate sterile grain with the liquid culture, then mix the colonised grain into a supplemented hardwood substrate. Pasteurised straw or hardwood pellets are also options.
Supplied as a liquid culture syringe for inoculation.
