Ingredients and science

What is actually in the bag

Four working ingredients on top of real ground Honduran Arabica. Here is what each one does and what has been studied.

Kalba mushroom coffee ingredients
Turkey Tail mushroom
01Mushroom extract

Turkey Tail

Backs your gut and your immune system*

A mushroom with a long record in traditional use, in the blend for gut and immune support.*

What has been studied

Its PSP compound acted as a prebiotic in a randomised trial of healthy volunteers, shifting the composition of the gut microbiome.* Pallav et al., Gut Microbes, 2014. PMID 25006989

Chaga mushroom
02Mushroom extract

Chaga

Antioxidant compounds in every cup

The dark, dense mushroom in your cup, in the blend for its antioxidant compounds.

What has been studied

Contains antioxidant compounds including polyphenols. Glamočlija et al., Journal of Ethnopharmacology, 2015. Compositional analysis. PMID 25576897

Lion's Mane mushroom
03Mushroom extract

Lion's Mane

A quiet assist for your focus*

In a supporting role, there to help you stay on task through the morning.*

What has been studied

Studied for cognitive support in randomised human trials.* Mori et al., Phytotherapy Research, 2009. PMID 18844328. Docherty et al., Nutrients, 2023. PMID 38004235

Black seed, Nigella Sativa
04Cold-pressed seed oil

Black Seed

Helps your body take up the mushrooms*

Nigella Sativa, cold-pressed to 5% thymoquinone, single-sourced from Australia through Habshifa, our mother brand.

What has been studied

Studied in over 80 randomised controlled trials for its effects on markers of oxidative stress and inflammation.* Jafari et al., Pharmacological Research, 2025. Systematic review and meta-analysis of 82 randomised controlled trials, 5,026 participants. PMID 40714301

The Black Seed Absorption System: black seed cold-pressed to 5% thymoquinone helps your body absorb Turkey Tail and Chaga
The Black Seed Absorption System

Mushrooms only help if your body absorbs them

You can drink Turkey Tail and Chaga every morning and still get little out of them, because much of what you swallow simply passes through. Kalba adds black seed, cold-pressed to 5% thymoquinone, to help your body actually absorb the mushrooms.* It comes from a single source in Australia through our mother brand Habshifa, which has worked with black seed for years.

Black Seed Activated.

The research

Read the studies behind the ingredients

Research on an ingredient is not a promise about a cup of coffee. It is why the ingredient is in the bag.

Turkey Tail

Its PSP compound acted as a prebiotic in a randomised trial of healthy volunteers, shifting the composition of the gut microbiome.* Pallav et al., Gut Microbes, 2014. PMID 25006989

Chaga

Contains antioxidant compounds including polyphenols. Glamočlija et al., Journal of Ethnopharmacology, 2015. Compositional analysis. PMID 25576897

Lion's Mane

Studied for cognitive support in randomised human trials.* Mori et al., Phytotherapy Research, 2009. PMID 18844328. Docherty et al., Nutrients, 2023. PMID 38004235

Black Seed

Studied in over 80 randomised controlled trials for its effects on markers of oxidative stress and inflammation.* Jafari et al., Pharmacological Research, 2025. Systematic review and meta-analysis of 82 randomised controlled trials, 5,026 participants. PMID 40714301

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

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