Four Sigmatic's Lion's Mane & Chaga Mushroom Coffee is real instant Arabica with two dual-extracted functional mushrooms already in it — Lion's Mane for cognitive support and Chaga for antioxidants — plus wild Rhodiola root. It comes as 10 single-serve sachets that dissolve instantly in hot water and taste like coffee, not a supplement.

Your morning coffee. With the focus mushroom and the antioxidant one already in it.

Most mushroom coffees are a compromise - either they taste of mushrooms, or the mushroom dose is too low to matter. Four Sigmatic's Lion's Mane & Chaga Mushroom Coffee is neither. It uses 100% organic Arabica beans grown in the volcanic soils of South East Asia, dual-extracted Lion's Mane and Chaga, and wild-harvested Rhodiola root - and it comes in 10 individual sachets that dissolve instantly in hot water.

It tastes like coffee, not like a health supplement. That matters.

What's in each sachet

Organic Arabica coffee - the base is a single-origin Arabica, carefully roasted and brewed before spray drying into instant form. 40-50mg caffeine per sachet - enough for a clean energy lift, less than a standard espresso.

Lion's Mane (250mg, dual-extracted) - Hericium erinaceus, the functional mushroom most studied for cognitive health. Dual extraction captures both the water-soluble beta-glucans and the alcohol-soluble hericenones and erinacines - the active compounds linked to Nerve Growth Factor (NGF) stimulation. Two independent double-blind, placebo-controlled trials - Mori et al. (2009) and Saitsu et al. (2019) - both found meaningful improvements in cognitive function in adults taking Lion's Mane daily. A 2023 pilot study in healthy young adults found faster performance on cognitive tasks following supplementation.

Chaga (dual-extracted, wildcrafted Siberian) - Inonotus obliquus, sourced wild from Siberia where it grows on birch trees in sub-zero conditions. Chaga has one of the highest recorded ORAC scores of any natural substance - a measure of antioxidant density. It contains betulinic acid (derived from the birch bark it grows on), melanin, and beta-glucans. A study published in Biomedicine & Pharmacotherapy found Chaga extract exhibited notable antioxidant and anti-inflammatory properties. The dual-extraction process here - hot water and alcohol - captures both the polysaccharide fraction and the betulinic acid compounds that a water-only extraction would miss entirely.

Wild Rhodiola root - Rhodiola rosea is one of the most researched adaptogens in the world, native to the Arctic regions of Europe and Asia. Research has documented its effects on mental fatigue and cognitive performance under stress: a systematic review published in Phytomedicine found that Rhodiola consistently improved measures of mental performance and reduced fatigue in working adults.

Sachets vs. the bag - which is right for you?

We also stock Four Sigmatic Ground Lion's Mane Coffee by the bag, which gives you 24 servings of freshly brewed coffee at a better cost-per-serving. The sachets are for people who want portability - office desk, gym bag, travel, hotel room. Dissolve in 200ml of hot water, no equipment required.

10 sachets | 0 sugar | 0 calories

Zero sugar, zero calories, no artificial flavourings. Organic certified. Suitable for vegans.

Not suitable for children or pregnant/nursing individuals. Consult your doctor if taking medications or with a pre-existing condition. Contains caffeine - not recommended late in the day.

Stocked and shipped from Dublin. Order before 4pm for same-day dispatch.

Frequently Asked Questions

What does Lion's Mane & Chaga mushroom coffee taste like?

Like coffee. It's a single-origin organic Arabica base, and the dual-extracted mushroom powders are tasteless at this quantity — no earthiness or bitterness. A clean instant cup.

How much caffeine is in each sachet?

Around 40-50mg per sachet — less than a standard espresso, enough for a clean energy lift. Not recommended late in the day.

What are Lion's Mane and Chaga each for?

Lion's Mane is the functional mushroom most studied for cognitive function, while Chaga is valued for its very high antioxidant density. The blend also includes Rhodiola, an adaptogen studied for mental fatigue under stress.

Should I buy the sachets or the ground coffee bag?

The sachets are for portability — desk, gym bag, travel — and dissolve instantly in hot water with no equipment. The ground bag gives 24 servings of freshly brewed coffee at a lower cost per serving. Same core benefit, different format.

How do I make it?

Dissolve one sachet in around 200ml of hot water and stir. Works iced too — dissolve in a little warm water first, then add ice. One to two sachets per day.