Mother·Culture
Custom probiotic yogurt · NYC + LA

Living yogurt,
cultured for you.

We do the hard, lab-grade fermentation — the long, high-potency ferment that made the viral L. reuteri yogurt famous — then tune it to your goals across a 12-strain library. Fresh, certified live, delivered cold every 30 days.

112B+ CFU at bottlingLab-certified every batch12-strain library
Plain L. reuteri probiotic Greek yogurt in a glass jar — Mother Culture
In every box
BatchMC-0612
CFU at bottling112B / serving
Listeria · Salmonella · E. coliNOT DETECTED
Yeast / mouldWITHIN SPEC
Status✓ RELEASED
100B+ CFU at bottlingLab-certified every batchFull-fat Greek baseProbiotics + postbioticsDelivered coldNYC + LANo added sugarGlass, never plasticCultured for you100B+ CFU at bottlingLab-certified every batchFull-fat Greek baseProbiotics + postbioticsDelivered coldNYC + LANo added sugarGlass, never plasticCultured for you
The opening

The best gut fix shouldn’t be a 36-hour chore.

Thousands of people now ferment milk for 36 hours at home chasing the L. reuteri “super yogurt” — temperature-obsessed, batch after failed batch. It’s unpaid proof that this works. We took that same lab-grade craft and opened it up — a 12-strain library, tuned to your goals, without the kitchen experiment.

Mother Culture is real, fresh, fermented food — not a pill, not a powder. Engineered like a supplement, certified like a lab, eaten like the Greek yogurt you already love.

01

Not a capsule

Dairy buffers stomach acid, so more culture survives to your gut than most pills deliver.

02

Not a test kit

Goal-based and science-informed — no microbiome test we can’t stand behind.

03

Probiotics + postbiotics

A long ferment builds compounds that keep working as live counts settle.

04

Certified live

A guaranteed CFU count and full safety panel, in the box, every batch.

How it works

From a two-minute chat to fresh yogurt at your door.

01

Take the intake

A two-minute conversation about your goals, digestion, diet and sleep. No stool test, no needles — just honest questions.

02

Meet your mix

We route you to one of seven scientist-designed cultures, with plain-language reasoning. Wellness guidance, not a diagnosis.

03

We ferment fresh

Your mix is cultured to order on a long, high-CFU protocol, then lab-tested for live count and purity — every single batch.

04

Delivered cold

Four to six 500g glass jars arrive cold at your door every 30 days, with that batch’s certificate of analysis in the box.

~2 MINUTES · WELLNESS GUIDANCE, NOT A DIAGNOSIS
Seven cultures

Designed by scientists.
Routed to you.

Every mix is a fixed, tested recipe — locked strains, target CFU and a defensible structure/function claim. The personal part is which one finds you.

No-nonsense science

Probiotics and postbiotics — in one fresh food.

A long, controlled ferment doesn’t just grow live cultures. It generates postbiotics — short-chain fatty acids, bioactive peptides, exopolysaccharides — beneficial compounds that keep working even as live counts settle. It’s the one answer to “are they still alive?” that a capsule can’t give.

Strain library · COA · Claims
Gut barrier

Components that strengthen tight junctions and stimulate mucus — supporting the gut lining.

Immune balance

Cell-wall fragments and exopolysaccharides that help modulate immune signalling.

Metabolic

Short-chain fatty acids — butyrate, propionate, acetate — that act as signalling molecules and fuel.

Shelf-honest

Set at production and stable, postbiotics keep delivering even as live counts settle in the jar.

An open jar of plain Mother Culture probiotic yogurt with a brushed-gold spoon on a slate counter
Format & trust

One jar. Full-fat Greek. Certified live.

01

Full-fat Greek base

No added sugar, no flavors, no nasties — the clean, crave-able Greek you already eat. Taste out-retains any health claim.

02

Concentrated jars

Cultured as a daily functional serving — not a breakfast tub. Four to six 500g glass jars per cycle, for opened freshness.

03

Glass, never plastic

Inert, plastic-free, premium — and it lets the culture keep slowly fermenting the way it should.

Join the culture

A living thing, shared by people who pay attention.

The subscription

One ritual. Ninety-nine a month.

A 30-day supply, made to order and delivered cold. Premium-but-honest: above a $50 capsule, below the $150-a-month coconut jars — because this is fresh, certified, made-for-you food.

NYC + LA only30-day cadence
Monthly subscription
$99/ month
Founding members
✓4–6 × 500g glass jars
✓Your scientist-designed mix
✓Batch certificate of analysis
✓Cold last-mile delivery
✓Pause or change anytime

OUTSIDE NYC + LA? JOIN THE WAITLIST.

Questions

The honest answers.

No. The intake is wellness guidance, not a diagnosis. Our claims describe how specific strains support normal body functions — we never claim to treat, cure or prevent disease. If you have a medical condition, talk to your doctor.

We launch in New York City and Los Angeles only, with cold last-mile delivery. Everywhere else can join the waitlist — density is what keeps the product fresh and the delivery green.

Honestly and goal-first. We route you to a scientist-designed culture from your goals and symptoms — not a microbiome test, because the science there isn’t yet reliable. We’d rather be straight with you than over-claim.

Made to order and delivered cold within days of bottling. We guarantee live CFU at bottling and include each batch’s certificate of analysis in the box.

Four to six 500g glass jars per 30-day cycle — full-fat, no-added-sugar Greek base — plus your batch certificate of analysis. Designed as a daily functional serving, not a breakfast tub.

High-CFU live cultures aren’t right for everyone. Our intake screens out pregnancy, immunocompromise and infants, and we’ll tell you honestly if it’s not for you.