WE GROW ALL OUR MUSHROOMS
Mesima
Vegan
Grown in Portimao, Portugal
EU Certified Organic
100% Traceable
Lab tested
No third party mushrooms
Pure and Certified Organic Mesima — Phellinus linteus — one of the most revered functional mushrooms in Korean and Japanese herbal medicine for over 2,000 years. Barely known in Western markets. Grown in-house on Gribb's farm in Portugal — one of very few European producers cultivating this mushroom. 10:1 dual extracted.
For daily vitality and overall wellbeing — grounded in 2,000 years of Korean and Japanese herbal tradition.
What's mesima
Phellinus linteus — known as sang-hwang (桑黃) across East Asia, meaning "mulberry yellow" for its colour and its traditional growth on mulberry trees — is one of the most revered functional mushrooms in Korean and Japanese herbal medicine, with a recorded history of use spanning over 2,000 years. It appears in traditional Korean and Japanese pharmacopoeias and was used across the Han dynasty period in Chinese herbal practice. In East Asia it is regarded as one of the most medicinally significant of all functional mushrooms — yet in Western supplement markets it remains almost entirely unknown, partly because it is genuinely difficult to cultivate and rarely grown in Europe.
Gribb cultivates Mesima on their own certified-organic farm in Portugal under PT-BIO-10 — one of the very few European producers growing this mushroom from whole fruiting body in-house — and dual extracts it to a 10:1 ratio — each 2,000mg serving equivalent to 20,000mg fresh fruiting body — standardised to 32–40% beta-glucans (β1,3/β1,6), lab-tested every batch. Naturally rich in hispidin polyphenols and uniquely structured beta-glucans.
This product is not intended to diagnose, treat, cure, or prevent any disease.
Powder vs capsules — which is right for you
Powder
Best for: smoothie and drink ritualists
Stirs or blends invisibly into any food or drink. Flavour-neutral. Works in smoothies, matcha, yogurt, oat porridge, cacao. Maximum versatility.
Capsules
Best for: no-fuss daily supplement takers
Vegan HPMC (pine fibre). 2 capsules daily with water. Same formula, same dose — for people who want the benefit without integrating powder into their routine.
Ideal for
- You want the functional mushroom the Western wellness world hasn't caught up to yet — already prized in East Asia for over 2,000 years While Reishi and Lion's Mane have become familiar in Western wellness culture, Mesima has remained largely unknown outside specialist circles in Europe and North America. In Korea and Japan it is ranked alongside Reishi as one of the most significant functional mushrooms — the subject of decades of Korean and Japanese nutritional science research. Gribb grows it in Portugal and offers it as a standalone product — one of the very few European producers doing so.
- You've explored Reishi and Lion's Mane — Mesima is the natural next discovery The functional mushroom journey typically begins with Reishi and Lion's Mane, moves into Chaga, Shiitake, and Maitake, and eventually arrives at the less familiar species with equally deep herbal significance. Mesima is that next step — a mushroom with a herbal tradition as long and as serious as Reishi's, simply less known in Western markets. Naturally rich in hispidin, a polyphenol compound studied for its antioxidant properties, and uniquely structured beta-glucans.
- Powder to blend or capsules for daily convenience — same formula, grown and extracted in Portugal Mesima has a very mild, neutral flavour — one of the most discreet standalone mushroom powders in the range. Blends without trace into coffee, smoothies, or any morning drink. Capsules are two a day with water. Both deliver 2,000mg of dual extracted 10:1 certified-organic Mesima per serving, equivalent to 20,000mg fresh fruiting body.
INgredients
Powder: Mesima — Phellinus linteus (certified organic dual extracted 10:1 concentrated extract, whole fruiting body, grown in Portugal under PT-BIO-10). 60g — approx. 30 servings. No fillers. No additives.
Capsules: Same mushroom extract. Capsule shell: HPMC (hydroxypropyl methylcellulose, pine fibre) — vegan. 60 capsules × 1,000mg.
Allergens: No known allergens. Produced in a facility that handles nuts, coconut, and sesame.
Packaging may vary.
Specifications
Mushroom:Mesima — Phellinus linteus (100% whole fruiting body) · Common names: Sang-hwang (Korean/Japanese) · Sangwhang · Meshimakobu (Japanese) · Mulberry yellow fungus
Extraction ratio: 10:1 concentrated extract
Mushroom dose: 2,000mg per serving
Beta-glucan content: Standardised 32–40% (β1,3 / β1,6)
Formats: Fine powder (60g) · vegan HPMC capsules — pine fibre (60 × 1,000mg)
Servings: 30 servings / 1-month supply at 2g dose
Certification: Certified Organic PT-BIO-10
Sourcing: Grown in Portugal by Gribb · no third-party mushrooms ·
Allergens: No known allergens in formula. Produced in a facility handling nuts, coconut, and sesame.
How to use
- Powder: Add 1/2 tsp (2g) to your favourite drink, smoothie, yogurt, or recipe. Blends invisibly — no flavour impact.
- Capsules: Take 2 capsules (2,000mg) daily with a glass of water.
Best taken consistently as part of a daily routine. Most people notice changes in skin hydration and texture after 3–4 weeks of consistent use.
What to expect
Ritual beats intensity. Same time, every day. That's the whole game.
WEEK 1–2
Your body is absorbing and adjusting to the blend. The functional mushrooms
and adaptogenic botanicals need time to build in your system — most people
notice little change yet and that is completely normal. Stay consistent.
WEEK 3
This is usually when subtle shifts begin. Days feel slightly more even. The
afternoon dip that used to derail you starts to feel less sharp. Not a spike —
a steadier floor.
MONTH 1+
The cumulative effect. Most people at this point notice the difference on the
days they forget to take it. The vitality feels like yours — not something
borrowed from caffeine.
For informational purposes only. Not intended to diagnose, treat, cure or
prevent any disease.
Why dual extraction matter
Most functional mushroom products use a single extraction — which means they only capture part of what this mushroom has to offer.
Gribb's tincture uses a dual-extraction process: first with hot water to release the water-soluble beta-glucans, then with organic alcohol to extract the fat-soluble compounds. The two extracts are then combined into a single, full-spectrum liquid. It's a more time-intensive method — and the reason this tincture delivers what a capsule or powder alone cannot.
Choose options
Ritual beats intensity. Same time, every day. That's the whole game.
What to expect - day by day:
Week 1
Foundation. Your body is absorbing and adjusting. No dramatic changes yet. This is normal and expected.
Week 3
This is usually when subtle shifts begin. Days feel slightly more even. The afternoon dip that used to derail you starts to feel less sharp. Not a spike — a steadier floor.
MOnth 1+
The cumulative effect. Most people at this point notice the difference on the days they forget to take it. The vitality feels like yours — not something borrowed from caffeine.
Frequently Asked Questions
Mesima — Phellinus linteus, sang-hwang in Korean and Japanese — is a polypore fungus that grows traditionally on mulberry trees (hence sang-hwang, meaning "mulberry yellow"). It has been used in Korean and Japanese herbal medicine for over 2,000 years and appears in traditional Korean and Japanese pharmacopoeias. In Korea it is considered one of the most medicinally significant functional mushrooms alongside Reishi. In Japan it is studied at major research institutions and consumed by hundreds of thousands of people daily as a functional mushroom supplement. The combination of extreme herbal reverence in Asia and near-total obscurity in Western markets makes Mesima one of the most genuinely undiscovered functional mushrooms available in Europe.
Mesima is naturally rich in several bioactives of research interest:hispidin— a naturally occurring polyphenol found primarily in Phellinus and Inonotus species, studied for its antioxidant properties and its potential role in cellular protection;beta-glucanswith a uniquely structured polysaccharide composition that differs from common mushroom species and has been the subject of Korean and Japanese nutritional science research; andtriterpenoidsand other polysaccharides. Its bioactive profile is distinct from every other mushroom in the Gribb range — which is why Mesima contributes something genuinely different to any blend or standalone ritual that includes it.
Yes — every mushroom in this kit is grown in our own certified-organic urban farm in Portimão, Portugal. We grow them ourselves from spore through to harvest. Nothing is imported from third-party suppliers or rebranded from elsewhere.
Our production is certified organic by NATURALFA (PT-BIO-10) and every batch is third-party tested before it ships. Full traceability from farm to your door.
It means the mushroom is extracted twice using two different solvents. First, hot water pulls out the water-soluble compounds — primarily beta-glucans and polysaccharides. Then, organic alcohol extracts the fat-soluble compounds — including riterpenoids — that hot water cannot reach.
The two extracts are combined to create a single full-spectrum tincture. It's more labour-intensive than single extraction, but it produces a significantly more complete product.
It means 10kg of raw mushroom is concentrated down to produce 1kg of extract powder. So each 2g serving of Gribb's powder is equivalent in potency to 20g of the raw whole mushroom.
This concentrated format ensures every dose delivers a meaningful, standardised amount of beta-glucans and bioactive compounds — not just mushroom powder with unknown potency.
Beta-glucans (β1,3 and β1,6) are the primary bioactive polysaccharides found in functional mushrooms, and they're what most of the research into mushroom wellness focuses on.
The standardisation to 32–40% beta-glucans tells you that every batch of Gribb's mushrooms contains a consistent, meaningful amount of these compounds — not just mushroom powder of unknown potency.
It's the difference between a functional product and a decorative one.
Mesima appears in the 8 Mushroom Master Blend (12.5%), the Him Blend (25%), and the Immune Boost Blend (25%). The standalone powder delivers 100% Mesima at 2,000mg — the highest per-serving Mesima dose in the range. If you are already taking a product containing Mesima and want to increase your total daily intake of this specific mushroom, combining the standalone powder with your existing blend gives you the highest possible total Mesima dose.
If you already have a morning smoothie, matcha, or yogurt ritual — the powder is the obvious choice. It blends invisibly and adds zero preparation time.
If you'd rather not think about it at all, the capsules are exactly what they are: 2 capsules daily with water, done. Both contain the same extract at the same dose. The choice is purely about how you prefer to take it.
Yes — is designed for daily use as part of a consistent wellness routine.
As with any supplement, if you are pregnant, breastfeeding, have a medical condition, or are taking medication, please consult your healthcare provider before starting. This is a food supplement, not a medicine, and is not intended to diagnose, treat, cure, or prevent any disease.
Yes. Every mushroom used in Gribb's Lion's Mane tincture is grown on Gribb's own certified-organic farm in Portugal — certified under PT-BIO-10. No third-party mushrooms are ever used, which means full traceability from spore to bottle. Every batch is lab-tested for beta-glucan content and purity before it leaves the farm.
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