The Science

The science of
a living ferment.

Fermentation is one of the oldest food technologies there is — and one of the few that quietly does something good for us while it preserves what we eat. Here's where probiotics came from, what a living ferment actually is, and why we culture six strains together rather than stirring one or two into a finished product.

6Live Strains
36Hours Fermented
36°Ferment Temp
1908Probiotics, Since
A Short History What Probiotics Are Fermented, Not Formulated References The Six Strains →

Older than the word
for it.

People were fermenting food for thousands of years before anyone could name a single bacterium. Cultured milks, krauts and pickles kept communities fed and, it turned out, did something good for them along the way. The practice came long before the science that explained it.

The science caught up in the early 1900s. The Russian-born scientist Élie Metchnikoff — a Nobel laureate in 1908 for his work on immunity — observed that people in parts of Bulgaria who ate a great deal of soured, fermented milk tended to live remarkably long lives. He proposed that the lactic-acid bacteria in that milk were a reason why, and he believed in it enough to drink soured milk every day for the rest of his own. He is widely called the grandfather of probiotics.

The word "probiotic" came later, and the modern understanding later still — but the through-line is old and simple: living cultures, eaten regularly, as part of normal food. That is the tradition Reuteri Bio-Ferment belongs to.

A working community,
not a single hero.

Probiotics are live micro-organisms — mostly lactic-acid bacteria and bifidobacteria — that take part in the vast community of microbes living in the human gut, the gut microbiome. Reuteri Bio-Ferment is a food, not a medicine, and we don't make therapeutic claims. The honest answer is that the research is still developing. But here is what it broadly suggests, in general terms about probiotics, not about any one product:

One thing we'll say plainly: much of the strongest probiotic research is on specific, named research strains at supplement doses — not on a fermented food. We'd rather tell you that than borrow someone else's trial results. To meet the six strains we actually ferment, and what each brings, see The Six Strains →

This page is for general education. It is not medical advice. If you are pregnant, considering this for children, immune-compromised, or on medication, talk to a health professional first.

A living ferment —
not a powder stirred in.

You can add a strain or two to a finished product and call it probiotic. We'd rather grow them.

Over 36 hours at a controlled 36°C, the six strains ferment the coconut cream together — feeding, acidifying and developing as one ecosystem, exactly the way traditional cultured foods always have. It's a living food, kept cold, with every batch documented from first inoculation to final seal. No additives. No shortcuts.

That's the difference between formulated and fermented — and it's the whole reason we exist.

Where this
comes from.

General education, drawn from peer-reviewed reviews and primary research. Health-adjacent statements are framed as general probiotic research — not claims about this product.

  1. Anukam, K. & Reid, G. Probiotics: 100 years (1907–2007) after Metchnikoff's observation (2007); and Élie Metchnikoff (background).
  2. Zheng, J. et al. A taxonomic note on the genus Lactobacillus — reclassification into 25 genera. Int. J. Syst. Evol. Microbiol. (2020). PubMed 32293557.
  3. ISAPP. New names for important probiotic Lactobacillus species. isappscience.org.
  4. Current Updates on Limosilactobacillus reuteri: Brief History, Health Benefits, Antimicrobial Properties. Applied Microbiology, MDPI (2025). mdpi.com.
  5. Limosilactobacillus reuteri in Health and Disease (review). PMC8953724.
  6. Application of the Reuterin System as Food Preservative or Health-Promoting Agent: A Critical Review. PMC9778575.
  7. Occurrence of Lactobacillus reuteri in human breast milk. Microbial Ecology in Health and Disease. Tandfonline.
Educational only — not medical advice. Citations support general statements about probiotics and fermentation; they are not evidence that this product treats, cures or prevents any condition.
"Crafted by fermentation, not formula."
Mount Manaia and the Whangārei Heads coastline, Northland New Zealand — where Reuteri Bio-Ferment is made

Made Here

Small batches, fermented by hand in Whangārei, New Zealand.

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Taste the six strains.
Straight from the jar.

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