What Is Glera? A Beginner’s Guide

Quick answer: what is Glera?

Glera is a white wine grape, historically associated with north-eastern Italy, particularly Veneto and Friuli-Venezia Giulia. It is best known internationally as the principal grape used to make Prosecco.

The important distinction is that Glera is the grape variety, while Prosecco is generally the name of a regulated wine and geographical designation. A wine made from Glera is not automatically Prosecco. Conversely, Prosecco made under its production rules may contain small amounts of other permitted grape varieties alongside Glera.

Glera commonly brings fresh acidity, floral aromas and flavours that may suggest pear, apple or citrus. Its most familiar form is lively sparkling wine, but the grape can also appear in frizzante—lightly sparkling—wines and still white wines. The final result depends on where the grapes are grown, how ripe they are, the winemaking method and the wine’s sweetness.

Glera and Prosecco: what is the difference?

Think of the distinction this way:

• Glera tells you about the grape.
• Prosecco usually tells you about a wine’s regulated origin and production identity.

In European Union and Italian regulatory use, Prosecco is a protected geographical indication or denomination. The grape is called Glera. Prosecco production rules identify Glera as the base variety and allow limited contributions from other permitted varieties.

In Australia, the situation is more flexible for domestic wine labels. Wine Australia recognises Prosecco as a grape-variety name in the Australian domestic market, so an Australian bottle may use “Prosecco” or “Glera” in a variety context. That does not mean the two terms carry exactly the same meaning in every country or export market. Rules can also change, so labels intended for overseas markets may be treated differently.

For an Australian wine drinker, the practical lesson is simple: read Prosecco as a wine designation when it refers to Italian Prosecco, but remember that Australian labels may also use it as a variety term.

What does Glera wine taste like?

Glera-based wines often taste fresh, lively and fruit-led. Typical aromas can include:

• pear
• green apple
• citrus
• white flowers
• other light, fresh fruit notes

The grape generally contributes noticeable acidity and aromatic freshness. Familiar sparkling expressions are often light to medium-bodied, but this is a tendency rather than a rule. Glera does not guarantee one fixed body, sweetness level or flavour profile.

A wine can smell fruity without being sweet. Sweetness depends on the finished wine’s residual sugar and labelling category, not simply on the name Glera. Some Glera-based wines are dry, while others may have more noticeable sweetness.

The grape itself does not create bubbles. Carbonation comes from winemaking. This is why Glera can be used for sparkling wine, lightly sparkling wine or still wine.

Why is Glera associated with sparkling wine?

Glera is especially well known through Prosecco. Prosecco DOC commonly uses the Martinotti, or Charmat, method. In this approach, the wine’s secondary fermentation takes place in a tank rather than in each individual bottle.

Tank fermentation is commonly associated with preserving Glera’s floral and fresh-fruit character while creating its sparkling texture. The result is the lively, aromatic style many drinkers expect when they encounter Prosecco.

Not every Glera wine is made this way, however. A producer may make a still wine, a lightly sparkling frizzante or another sparkling presentation. Production choices can change the wine’s bubbles, texture, aroma and overall weight.

Where is Glera grown?

Glera has its strongest traditional association with Veneto and Friuli-Venezia Giulia in north-eastern Italy. The defined Prosecco production area spans parts of both regions, while Conegliano–Valdobbiadene is particularly associated with the Prosecco DOCG denomination.

Glera is also grown in Australia. Australian drinkers may encounter it in imported Italian Prosecco as well as Australian-produced wines labelled Glera or Prosecco.

Wine Australia’s 2024 variety snapshot reported 17,437 tonnes of Prosecco/Glera crushed in Australia in 2024. It identified the King Valley and the Murray–Darling–Swan Hill areas as important reported production associations. These figures describe recorded production, not exclusive Glera regions or a complete map of every Australian vineyard.

Australian Glera does not have to copy the style of Italian Prosecco. Australian climate, vineyard site, harvest decisions, production method and sweetness can all create a different expression.

What should you look for on an Australian label?

When buying wine in Australia, the name on the front label may give you several different kinds of information:

• a grape variety, such as Glera;
• a wine designation, such as Italian Prosecco;
• a place name or geographical indication;
• a producer’s chosen style description.

These categories can overlap in everyday shopping language, which is why Glera and Prosecco can seem confusing. If the bottle is Italian Prosecco, the name refers to a regulated wine designation. If it is an Australian wine using Prosecco as a variety name, it is describing the grape category under Australian domestic labelling practice.

The label will not tell you everything about sweetness, bubbles or body from the variety name alone. Look for the wine’s style or sweetness description, and remember that origin and production choices matter.

Common questions about Glera

Is Glera the same as Prosecco?

No—not universally. Glera is a grape variety. Prosecco is usually a regulated Italian wine designation, although “Prosecco” can also be used as a grape-variety term on Australian domestic labels.

Is all Glera sparkling?

No. Glera is a grape, not a sparkling-wine method. It can be made into sparkling, frizzante or still wine.

Is Glera sweet?

Not necessarily. Glera wines can be dry or sweeter. Sweetness depends on the finished wine, not just the grape name.

Is Glera only grown in Italy?

No. It is strongly associated with north-eastern Italy but is also grown in Australia and elsewhere.

What is the easiest way to remember Glera?

Remember three things: Glera is the grape; Prosecco is usually the regulated wine designation; and the final wine depends on where and how it is made.