How is pet nat (pétillant naturel) made?
Quick answer
Pet nat — short for pétillant naturel — is sparkling wine in its most stripped-back, honest form. There's no second fermentation, no added sugar, no fancy riddling process. The winemaker simply bottles the wine before its initial fermentation finishes, and the remaining natural sugars create gentle, playful bubbles. It's the darling of natural wine bars and the oldest known method of making sparkling wine.
Detailed answer
Pet nat is having a serious moment in the wine world, but the method behind it is actually the oldest way to make sparkling wine — predating Champagne by at least 200 years. The earliest documented example comes from the Abbey of Saint-Hilaire near Limoux in 1531, long before Dom Pérignon was even born.
The process is beautifully simple: take fermenting grape juice, bottle it before the yeast has finished converting all the sugar to alcohol, cap it, and wait. The remaining sugar ferments inside the bottle, trapping CO₂ and creating natural fizz. No added sugar, no added yeast, no intervention.
The result is typically a wine with gentler bubbles (2-4 atmospheres vs. 6 for Champagne), lower alcohol (often 10-12%), and a cloudy, sometimes funky appearance. That cloudiness comes from yeast sediment — some producers remove it (disgorge), while many leave it for texture and character.
Pet nats are made from all sorts of grapes: Chenin Blanc in the Loire, Mauzac in Limoux, Gamay in Beaujolais, even Riesling and Pinot Gris in Alsace. Almost all come from organic or biodynamic farming and use only wild yeasts — no lab cultures.
The charm and the challenge are the same thing: unpredictability. Every bottle is a little different. Some are bone dry, others slightly sweet. Some are gently fizzy, others aggressively bubbly. That's the adventure — and why pet nat has become the unofficial mascot of the natural wine movement.
| Pet nat style | Region | Grape | What to expect |
|---|---|---|---|
| Blanquette méthode ancestrale | Limoux, France | Mauzac | Apple, pear, gentle fizz |
| Loire pet nat | Anjou/Vouvray | Chenin Blanc | Honeyed, funky, cloudy |
| Beaujolais pet nat | Beaujolais | Gamay | Crunchy red fruit, pink fizz |
| Alsace pet nat | Alsace | Riesling/Pinot Gris | Floral, citrus, crisp |
| Italian col fondo | Veneto | Glera | Prosecco's rustic cousin, yeasty |