Mother·Culture
L. reuteri yogurt · NYC + LA

Ready-to-eat L. reuteri yogurt — without the 36-hour ferment.

The viral “super yogurt” works — thousands of people prove it every week. They just hate babysitting a 36-hour ferment. We run the long, lab-grade ferment for you, on a custom multi-strain culture, and deliver it cold.

112B+ CFU at bottlingLab-certified every batchDelivered cold
Plain L. reuteri probiotic Greek yogurt in a glass jar — Mother Culture
The basics

What is L. reuteri yogurt?

Lactobacillus reuteri is a probiotic strain popularised by Dr. William Davis’s Super Gut. The recipe that went viral takes a high dose of L. reuteri and ferments milk for roughly 36 hours — far longer than ordinary yogurt — to grow a very high count of live cultures.

That long, low-temperature ferment is exactly what’s hard to do at home: a degree too warm or a starter that’s off, and the batch separates, turns grainy, or simply doesn’t set. L. reuteri itself has been studied in connection with the gut–brain axis, calm mood, and oral and skin health — which is why people keep trying.

Mother Culture isn’t a single-strain product. L. reuteri is our flagship strain and one of a twelve-strain library; we blend it with complementary, well-characterised strains into a culture matched to your goals — then ferment and lab-certify it so you don’t have to.

DIY vs. delivered

The 36-hour chore, removed.

DIY 36-hour yogurtMother Culture
Ferment time~36 hours, watchedDone for you
Temperature controlHeld by hand, ±1°CLab-controlled, every batch
Live CFUUnknown — you’re guessingGuaranteed at bottling
Safety testingNone at homeFull pathogen panel, every batch
ConsistencyBatch-to-batch luckFixed, repeatable protocol
Your effortHours, plus the cleanupOpen the jar
Proof, not promises

Certified live — so you’re not guessing.

The one honest objection to any probiotic is simple: are they still alive when I eat them? We answer it on paper. Every batch is tested for live CFU and for purity — Salmonella, Listeria, E. coli, yeast and mould — before a single jar leaves, and the certificate of analysis travels in the box.

Sample certificate of analysis
BatchMC-REU-0612
CFU at bottling115B / serving
Listeria · Salmonella · E. coliNOT DETECTED
Yeast / mouldWITHIN SPEC
Status✓ RELEASED
Questions

L. reuteri yogurt, answered.

Not exclusively. L. reuteri is the strain that made the long-ferment “super yogurt” famous, and it’s one of the twelve strains in our library — but Mother Culture makes custom, multi-strain cultures tuned to your goals, not a single-strain product. Several mixes feature L. reuteri; others lead with different, well-characterised strains.

No — that’s the whole point. We run the long, temperature-controlled, lab-grade ferment for you and deliver it cold, so you skip the 36-hour kitchen vigil and the failed, separated or grainy batches.

Home batches vary with temperature, starter and timing, and you never really know the live count. Every Mother Culture batch is cultured to a fixed protocol and lab-tested for live CFU and purity before it ships, with the certificate of analysis in the box.

L. reuteri has been studied in connection with the gut–brain axis, calm mood, and oral and skin health. We describe how specific strains support normal body functions — we don’t claim to treat, cure or prevent any disease. Always talk to your doctor about your health.

Mother Culture delivers cold to New York City and Los Angeles on a 30-day subscription ($99/mo). Outside those cities you can join the waitlist and we’ll open your area when cold delivery reaches it.

Let us ferment it for you.

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. The Mother Culture intake provides general wellness guidance and is not medical advice. Talk to your physician before changing your diet, especially if pregnant, nursing, immunocompromised or managing a medical condition.