Prosecco vs pét-nat: what’s the difference?

Quick answer

Prosecco is mainly an origin-defined sparkling-wine category, while pét-nat is mainly a style or production-method term.

Prosecco comes from defined geographical designations in north-eastern Italy and is most commonly associated with the Glera grape. In its familiar sparkling form, the wine is usually made by fermenting the wine a second time in a pressurised tank. This creates a fresh, aromatic and generally consistent sparkling wine before bottling.

Pét-nat is short for pétillant naturel, meaning “naturally sparkling”. It is commonly made by bottling a partly fermented wine before the first fermentation is complete. Fermentation then continues in the bottle, creating carbon dioxide and bubbles.

That difference matters. Prosecco usually points you towards a more defined origin and category. Pét-nat points you towards a broader approach that can produce a wide range of wines. Neither name alone tells you exactly how sweet, cloudy, alcoholic or intensely sparkling the wine will be.

What is Prosecco?

Prosecco is a protected wine designation from north-eastern Italy. Its best-known sparkling wines come from the Prosecco DOC area, which spans parts of Veneto and Friuli-Venezia Giulia. There are also narrower Italian denominations, including Conegliano Valdobbiadene Prosecco Superiore DOCG.

The grape most strongly associated with Prosecco is Glera. However, it is safer to say “primarily associated with Glera” than to assume every wine labelled Prosecco is made entirely from that grape. The applicable denomination rules may permit other varieties in defined circumstances.

Most familiar sparkling Prosecco uses the Martinotti, or Charmat, method. The wine is fermented once to make a still base wine, then undergoes a second fermentation in a sealed, pressurised tank. The carbon dioxide produced during this fermentation dissolves into the wine. The wine is then bottled under pressure.

This tank-based approach helps preserve fresh, floral and fruit-driven aromas. You may notice pear, apple, citrus or white-flower characters, although the exact flavour depends on the wine, vineyard and producer.

Tank fermentation is the mainstream reference point, not an absolute rule for every Prosecco-related wine. Bottle-fermented examples also exist, including col fondo styles that retain lees sediment.

What is pét-nat?

Pét-nat is short for pétillant naturel. It is commonly associated with the ancestral method, or méthode ancestrale.

The basic idea is simple:

1. Grape juice begins fermenting.
2. The partly fermented wine is bottled before fermentation has finished.
3. Fermentation continues inside the bottle.
4. The remaining grape sugar is converted into alcohol and carbon dioxide.
5. Some of that carbon dioxide stays dissolved, making the wine sparkling.

Because the wine is bottled while fermentation is still under way, the result can be less uniform than a sparkling wine made through a more controlled, completed process. The amount of sugar remaining at bottling, whether fermentation finishes, and whether the wine is filtered or disgorged can all affect the final bottle.

Pét-nat is not one grape variety or one region. It can be made from many different grapes, so its aromas and texture may vary considerably.

In Australia, “pét-nat” is a commonly used descriptive term, not a regulated category. The name alone therefore does not certify a particular farming method, level of intervention or production standard.

Prosecco and pét-nat compared

These are useful tendencies, not guarantees. A clear pét-nat is still pét-nat, and a cloudy sparkling wine is not automatically pét-nat.

What might they taste like?

A typical Prosecco is often fresh, aromatic and fruit-driven. Its bubbles may feel lively and consistent, while its sweetness depends on the labelled category. “Prosecco” does not mean one fixed level of sweetness: read the label rather than relying on the name.

Pét-nat has a much wider range. It may show fresh fruit and floral aromas, or more herbal, savoury, yeasty or cider-like notes. Some versions are light and gently sparkling; others are more actively fizzy. Lees can add a softer, rounder or more textural impression.

Pét-nat may also contain visible sediment. This is not automatically a fault. It can simply indicate that yeast and other solids have remained in the bottle. But sediment and cloudiness are clues about how a particular wine was made, not a complete definition of the style.

Is pét-nat the same as natural wine?

No.

Pét-nat describes a sparkling style or fermentation pathway. Natural wine is a broader and less uniformly defined term associated with approaches to grape growing and winemaking.

A pét-nat may be made with low intervention, but the word pét-nat does not prove that every natural-wine principle has been followed. Likewise, not every natural wine is sparkling, and not every low-intervention sparkling wine is pét-nat.

Pét-nat is also different from traditional-method sparkling wine. Traditional-method wines undergo a second fermentation in the bottle after the base wine has been made. Pét-nat generally captures the end of the first fermentation in the bottle. Both involve bubbles made by fermentation, but the timing is different.

Which should you choose?

Choose Prosecco if you want a recognisable, origin-defined category and a generally fresh, aromatic sparkling style with relatively consistent bottle-to-bottle expectations.

Choose pét-nat if you are curious about a broader and more variable style. You may encounter unusual grape varieties, cloudiness, sediment, softer bubbles or more distinctive textures.

For either choice, look beyond the style name. Check:

• the grape variety, if listed;
• the country or region of origin;
• alcohol by volume;
• sweetness or residual-sugar information;
• whether the wine is filtered or contains sediment;
• closure and storage instructions.

Australian labels must provide relevant alcohol and standard-drink information, so use those details rather than assuming pét-nat is low in alcohol. “Natural”, “ancestral” and “Prosecco” are not substitutes for reading the label.

How should you chill and open them?

Chill sparkling wine thoroughly before opening. Cold wine holds carbon dioxide more effectively and is less likely to foam aggressively.

Do not shake the bottle. Keep it pointed away from people, glassware and anything breakable. Hold the cork or closure firmly while turning the bottle, rather than pulling it out suddenly.

If the bottle appears to contain sediment, standing it upright before opening can help the solids settle. Pour gently if you would prefer to leave the sediment behind. If the wine’s instructions suggest distributing the sediment, you can pour more deliberately instead.

Treat unusual pressure, leakage or a damaged closure cautiously. Once opened, pét-nat is best enjoyed promptly, since its bubbles and freshness can change quickly.

Frequently asked questions

Is pét-nat always cloudy?

No. Pét-nat may be cloudy when lees remain in the bottle, but it can also be clear.

Is pét-nat always sweet?

No. Its sweetness depends partly on how fermentation progresses and on the producer’s finishing choices. Read the label or producer description where available.

Is Prosecco always made by the tank method?

Most familiar sparkling Prosecco is made using a tank-based Martinotti or Charmat process, but bottle-fermented examples exist.

Is Prosecco always made from Glera?

Glera is the principal grape association, but applicable denomination rules may allow other varieties in defined circumstances.

Does pét-nat mean natural wine?

No. Pét-nat describes a sparkling style or fermentation pathway. Natural wine is a broader term.

Does sediment mean the wine is faulty?

Not necessarily. Sediment may be the result of yeast and other solids remaining in the bottle. It is a reason to pour thoughtfully, not automatic proof of a fault.