KEFAS

WILD FERMENTS.
REBEL BUBBLES.

⚡ REBELLION IN EVERY BUBBLE ⚡

Craft water kefir from Barcelona. Wild-fermented. Naturally alive. Born from two people who quit the script and started something real.

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Our Story

TWO NERDS.
ONE CULTURE.
ZERO BULLSHIT.

Sarah — natural sciences nerd. The kind of person who reads fermentation papers for fun. Vinz — skater who quit alcohol. Not because someone told him to, but because he decided the hangovers weren't worth it.

They met tibicos through Vinz's mom in Bourges, France. She'd been making water kefir the old way — no shortcuts, no pasteurization, just living cultures doing their thing. One taste and it clicked: this is what a drink should be.

"We moved to Barcelona. Started experimenting. Perfected the recipe in a tiny kitchen with more glass jars than furniture. The neighbours thought we were running a lab."

That kitchen lab became KEFAS. A brand built on the principle that if you can't pronounce the ingredients, you probably shouldn't drink it. Every batch is wild-fermented, naturally carbonated, and made by two people who care more about what's in the bottle than what's on the label.

Barcelona chose us. We chose it back.

The Flavors

TWO DRINKS. ZERO COMPROMISE.

Wild-fermented. Naturally carbonated. No pasteurization. No concentrate. Just living culture in a bottle.

The Original

OG

Crisp Citrus ⚡ Golden

The one that started it all. Clean, bright, and deceptively simple. Citrus on the nose, gentle sweetness that fades into a dry, effervescent finish. Yellowish gold in the glass — like liquid sunshine filtered through a Barcelona afternoon.

This is what water kefir tastes like when you don't mess with it. No flavour masks. No sugar dumps. Just tibicos doing what tibicos do best.

Citrus Dry Finish Light Body Naturally Fizzy
The Bold One

FOC DE BARNA

Wild Berries ⚡ Deep Red

"Fire of Barcelona." Named for the city that burns in the best way. Deep red in the glass, like a sunset over Montjuïc. Wild berries hit first — tart, jammy, alive. Then the fermentation kicks in with that signature KEFAS bite.

This isn't a fruit juice pretending to be healthy. It's a fermented drink that happens to taste like the best berries you've ever had.

Wild Berries Tart & Jammy Full Body Bold Finish
DIY Kefir

BREW YOUR OWN
REBEL BUBBLES.

Living KEFAS grains in a jar. Add sugar water. Wait. Repeat forever. Your kitchen is now a fermentation lab.

🫙 50G JAR — ferments 1L 🫙 100G JAR — ferments 2L
The Process

HOW TO BREW KEFAS.

Four steps. Zero excuses. Infinite bubbles.

1 🥄

Sugar Water

Dissolve 50g sugar in 1L water (or 100g in 2L). Use a glass jar. Mineral or filtered water only.

⚠️ Stir with wood or plastic. Never metal — it kills the culture.
2 🍋

Add The Goods

Drop in your KEFAS grains + a slice of lemon + a dried fig. The fig feeds the culture. The lemon keeps things balanced.

💡 Grains are alive. Treat them like a tiny pet that makes you fizzy drinks.
3 ⏳

Ferment

24-48 hours at room temp (~20°C). No direct sunlight. Cover loosely. Strain = first ferment done.

🔥 Want more fizz? Second ferment: add fruit or spices to strained kefir, seal tight, wait 12-24h.
4 ♻️

Repeat Forever

Grains back in fresh sugar water. Start again. They grow and multiply — eventually you'll have enough to share.

🎁 Extra grains? Give them to friends. Start a kefir rebellion in your neighbourhood.
Storage & Drinking

KEEP IT ALIVE.

🍾

Strong Glass Only

Use pressure-rated glass bottles. This stuff builds carbonation. Weak glass + live ferment = mess on your ceiling.

❄️

Refrigerate

Cold slows fermentation. Store in the fridge after bottling. Best within 7 days — but honestly, it never lasts that long.

🚫

Don't Shake

It's naturally carbonated and under pressure. Open slowly over a glass. Unless you enjoy kefir geysers. We don't judge.

Sweetener Cheat Sheet

FEED YOUR CULTURE.

Not all sugars are equal. Here's what works.

Cane Sugar
⭐ Classic — The Go-To

Clean, reliable, grains love it. This is your baseline. Start here.

Brown Sugar
Richer & Slower

Deeper flavor, more molasses. Ferments a bit slower but adds complexity.

Panela / Molasses
Mineral Boost

Packed with minerals. Grains thrive on it. Gives an earthy, caramel edge.

Coconut Sugar
Mix with Cane

Low glycemic, subtle caramel. Mix 50/50 with cane sugar — pure coconut sugar starves the grains.

Maple Syrup
Small Amounts

Rich, earthy. Use small amounts blended with cane. Too much slows fermentation.

Honey
Small Amounts

Raw honey is antimicrobial — can harm grains in large doses. Use ≤25% of total sugar. Mix with cane.

The Science

WHY WATER KEFIR?

Not hype. Not marketing. Actual microbiology.

500+ Species of Microorganisms
500B Per 250ml Glass
~70 Different Strains
2.5B Probiotic Cells/Serving
🍺

Yeast Rebels

The Fizz Makers
  • Create natural carbonation
  • Support gut flora diversity
  • Boost nutrient absorption
🛡️

Lactic Acid Warriors

The Protectors
  • Aid digestion & nutrient breakdown
  • Block harmful bacteria
  • Build a resilient gut ecosystem
🔬

Acetic Acid Crew

The Balancers
  • Produce beneficial organic acids
  • Support healthy cholesterol levels
  • Balance the microbiome

THIS ISN'T
JUST A DRINK.

It's a protest in a bottle. Every jar of KEFAS grains is a vote against the industrial food machine. Against pasteurized, preservative-laden, mass-produced beverages that pretend to be healthy.

When you brew KEFAS at home, you're joining a tradition that's thousands of years old. You're choosing living culture over factory output. Real ingredients over ingredient lists you need a PhD to read.

You're not just making a drink. You're making a statement.

READY TO BREW?

Order your KEFAS grain jar. DM us on Instagram. We'll ship your living cultures and you'll be fermenting within 48 hours.

ORDER GRAIN JARS ⚡
The Movement

KEFAS ISN'T
JUST A DRINK.
IT'S A MOVEMENT.

We don't do influencer partnerships. We don't sponsor yacht parties. We don't have a "head of growth hacking."

KEFAS is for the artists, misfits, makers, and rebels — the people who build things with their hands, question what they're told, and choose what they consume with intention.

Every bottle is a vote against the corporate machine that turned food into a factory output. Every sip says: we can do better than this.

Anti-Corporate Pro-Community Handcrafted Barcelona Born
JOIN THE MOVEMENT ⚡
Get Some

READY TO ORDER?

KEFAS sells direct-to-consumer only. No retail. No shops. No middlemen marking up the price. Just us, making it. And you, drinking it.

⚡ How It Works

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