Most of the kombucha on the shelf was carbonated by a machine.

The tea was fermented in a tank, the fermentation was stopped, and then carbon dioxide was pushed in from a gas cylinder before the bottle was capped. It works. It is fast, it is consistent, and it is how nearly every large-scale kombucha in Australia is made.

We do it the other way round.

Pétillant naturel

Pét-nat is short for pétillant naturel - French for "naturally sparkling". The term comes from the natural wine world, where it describes a wine that is bottled while it is still fermenting, so the last of the fermentation happens inside the sealed bottle.

The yeast keeps working. It keeps eating the remaining sugar. And because the bottle is closed, the carbon dioxide it produces has nowhere to go. It dissolves into the liquid.

The bubbles are not added. They are made.

Apply that to fermented tea instead of grape juice and you have pét-nat kombucha. It is a small but growing movement - you will find it in the Basque Country, in Berlin, in Brooklyn, and on the wine lists of restaurants that would never have poured kombucha five years ago.

We have been doing it in the Swan Valley since long before it had a name.

What actually happens in the bottle

Our core range is bottle-conditioned. That means:

We ferment the tea. Organic tea, sugar, and a living culture. The culture eats the sugar and produces acids - that is what gives kombucha its tartness. We watch it daily and we finish the brew on pH and Brix, not on a clock.

We bottle it live. No pasteurisation. No filtering out the culture. The kombucha goes into the bottle with fermentation still to run.

It finishes in the glass. Over the following days, the remaining yeast converts the last of the sugar and the bottle builds its own carbonation.

Nothing is added to make that happen. No gas, no acidifiers, no juice concentrate. What is in the bottle is what the brew made.

Why bother?

Honestly, force carbonation is easier. It is more consistent, it is faster, and the shelf life is more predictable. There are good commercial reasons most breweries do it.

Three reasons we don't.

The bubble is different. Forced carbonation gives you a hard, aggressive fizz - the kind you get from a soft drink. Bottle conditioning produces a finer, softer bead, because the CO2 has dissolved slowly into the liquid rather than being forced in under pressure. It is closer to champagne than cola.

The flavour is more complex. Fermentation is not a single event that you stop and start. Letting it finish in the bottle gives the acids, the esters and the tea more time to settle into each other. You taste the tea. You taste the fruit. It is not a sugar hit with a sour note on top.

It is honest. We say "Brewed Not Made" because it is a real distinction and not a slogan. If you add acid to hit a pH target and gas to hit a fizz target, you have manufactured a drink that tastes like kombucha. We would rather brew one.

What it means for the bottle in your hand

A few things follow from this, and they are worth knowing.

It is alive. Keep it cold. Refrigeration slows the culture down; warmth speeds it up. A bottle left in a hot car is still fermenting.

Open it gently. Bottle-conditioned drinks carry real pressure. Crack the cap slowly.

No two batches are identical. Fermentation is a living process, not a recipe followed by a machine. There is natural variation from brew to brew - the same way there is between vintages. We think that is a feature.

There may be sediment. That is the culture. It is meant to be there.

Pét-nat kombucha vs pét-nat wine

They share a method, not an ingredient.

Pét-nat wine is grape juice, fermented and bottled before the fermentation finishes. Pét-nat kombucha is fermented tea, treated the same way. Both are naturally sparkling. Both are unfiltered. Both are made with as little intervention as the process allows.

The difference is what you get at the end. Pét-nat wine is wine. Ours is non-alcoholic, and it is tea.

Where to find it

Our core range comes in 300ml and 750ml - Mango, Cranberry & Rose, Dragon Fruit, Ginger & Lime, and Creamy Strawberry. Same liquid, two sizes. The 750ml is designed for the table: something to open and share, and to pour into a proper glass.

You will find us at Como The Treasury, The Westin, Aloft, and in the Singapore Airlines SilverKris Lounge in Perth. Or we will bring it to your door.

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