Oyster Mushroom 'Pearl' - 2.2KG Ready To Fruit Block
Oyster Mushroom 'Pearl' - 2.2KG Ready To Fruit Block
First harvest of 500-600g in 1-2 weeks · Instructions and guide included · Discount starting at 2+ blocks · 4+ blocks made to order in 2 weeks
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What's Included
What's Included
Why Choose Our Blocks?
Why Choose Our Blocks?
Mushroom Profile
Mushroom Profile
Growing Information
Growing Information
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More Growing Information:
Delivery Information
Delivery Information
- Ships from Tamborine Mountain, QLD, Australia via either AusPost or Aramex
- Fast dispatch within 1 business day if in stock (excluding Fridays) otherwise will be made to order and ready in approximately 14 days
Every oyster block on the market is measured against this one.
Pearl Oyster (Pleurotus ostreatus) is the most widely cultivated gourmet mushroom in the world — reliable, fast, high-yielding and endlessly versatile. It’s the variety chefs already know and order by name, and the one that anchors most commercial growing operations.
This is a 2.2 KG ready-to-fruit block: fully colonised, sealed, and ready to pin as soon as you cut it open. Grown, sterilised and colonised right here on Tamborine Mountain on our own hardwood + soy hull Masters Mix — not imported, not repackaged, not resold. Cut an X, keep it humid, and you’ll have mushrooms in under a week.
Why Pearl anchors the range
The benchmark oyster
The one chefs ask for by name.The most widely grown gourmet mushroom on earth — reliable, forgiving and consistent batch after batch. If you’re supplying a kitchen or a market stall, it’s the variety buyers already recognise and request. Nothing else in the range does the everyday workhorse job as well.
Fastest to pin in the range
First pins in 3–7 days.Pearl gets moving faster than almost any other oyster — visible clusters typically form within 3–7 days of cutting the block and initiating fruiting conditions. Less waiting, quicker turnover, and a fast, satisfying result whether you’re a first-timer or restocking a market table.
High first-flush yields
500–600g first flush · up to 4 flushes.Under good conditions the first flush delivers 500–600 g, with up to four harvests from a single block before the substrate is spent. Among the highest-yielding varieties we run, which is exactly why it’s the natural pick for high-volume growers.
Grown and colonised on-farm
Not repackaged. Grown here.Every block is mixed, sterilised and colonised at Kai Kai Farm on our own hardwood + soy hull Masters Mix — the same substrate we fruit commercially. Verified contamination-free, consistent block to block, and packed to order rather than sitting in a warehouse.
What you’ll notice
- Pins forming within days of cutting the bag — one of the fastest oysters to wake up
- A big, clustered first flush — 500–600 g of silky grey-brown oysters under good conditions
- Multiple harvests from a single block — keep the humidity up and re-flush up to four times
- Mild, slightly sweet mushrooms that suit almost any dish — raw through to grilled whole
- A forgiving grow that shrugs off beginner mistakes better than most varieties
Why Masters Mix drives strong oyster yields: Hardwood provides the lignocellulosic backbone — the cellulose, hemicellulose and lignin that oyster mycelium evolved to digest. The soy hull fraction adds readily available nitrogen and protein, which fuels denser mycelial growth and heavier flushes than pure hardwood alone. The blend is balanced to push yield while staying clean right through colonisation. Every block is sterilised and fully colonised in controlled conditions before it leaves the farm, so the mycelium arrives established and primed — all it’s waiting for is air, light and moisture.
Why you harvest “pre-curl”: Oyster caps start flat-to-domed and curl upward as they mature — and once they curl, they begin dropping spores and losing shelf life fast. Harvesting each cluster just before the cap edges turn up gives you the best texture, the longest fridge life and the cleanest presentation, while keeping airborne spore load down in your growing space. Pull a little early rather than a little late.
How to fruit your block
Site it → cut an X → keep it humid → harvest pre-curl → rest → re-flush
Fruiting conditions at a glance
Step by step
What to expect from each flush
🍳 In the kitchen
Mild, delicate and slightly sweet, with a silky, tender texture — the most versatile mushroom in the range. Excellent raw, sautéed in butter, tossed through pasta, stir-fried, or grilled whole. Pearl readily absorbs surrounding flavours while holding its own character, and its neutral colour suits every cuisine. Cook it hot and fast to avoid stewing, and you’ll get a clean, savoury result every time.
Storage & handling
Perfect for
What’s inside the block
~2.2 KG block, sterilised and fully colonised with Pearl Oyster mycelium before dispatch. No fillers, no additives — just substrate and mycelium.
More ready-to-fruit blocks
The Kai Kai Farm story
Kai Kai Farm is a family operation on Tamborine Mountain in Queensland’s Scenic Rim. We grow gourmet mushrooms commercially — oysters, lion’s mane, pioppino, chestnut — and we sell blocks cut from the same production we fruit ourselves.
We’re growers, not resellers. Every block is mixed, sterilised and colonised here on the mountain, using methods refined over years of commercial gourmet and medicinal mushroom production. What arrives at your door is genuinely fresh — inoculated, colonised and packed to order, with verified contamination-free cultures and full transparency from substrate to shelf.
Whether you’re fruiting one block on a kitchen bench or running a rack of them through a market garden, this is the block we grow ourselves. It’s the one we’d hand a first-timer, and the one our commercial buyers keep coming back for.
Hi, it seems to be growing so I won't know until they are fully grown.
Just harvested the first flush, delicious
Amazing customer service, they have always kept in contact making sure any questions i had were answered, aswell as giving me a turkey tail block before it was on the store! As for the reishi block i got it looks amazing, perfectly white with the usual mycelium pee, the turkey is turning brown already. 10/10 would suggest
I am not sure what to do with the fruit block, I would have appreciated some instructions
Hi Edward, thank you for your feedback. We include an instruction label on the bottom of the block to help you get started with your mushroom block. If you have any questions, feel free to reach out—happy to help!
The chestnut mushrooms have shown no signs of fruiting yet. However the oyster and lion manes are growing really well.
Hi Marion, thanks for sharing your experience. We're sorry to hear the chestnut mushrooms haven't fruited yet. If you need any tips or support, feel free to reach out— we're here to help! Please note that Chestnuts can take a bit longer than other species to pin and a cold shock can encourage them along.
Just coming on slowly
Fantastic block - vigorous strain on quality organic substrate, multiple large flushes with no contamination. Couldn’t recommend more highly.
