What is sparkling wine?

Sparkling wine is wine infused with carbon dioxide gas, creating the characteristic bubbles and fizz that distinguish it from still wine. The carbonation can be achieved through two primary production methods, each affecting the wine's flavour profile and mouthfeel.

The traditional method, also called bottle fermentation, involves a secondary fermentation inside the sealed bottle where yeast consumes residual sugar and produces CO2 as a byproduct. This gas remains trapped in the wine, building pressure over time. The champagne method and other region-specific techniques follow this approach, typically resulting in finer, more persistent bubbles and complex flavours from extended contact with yeast solids.

The alternative method involves injecting carbon dioxide directly into still wine before bottling, similar to carbonating soft drinks. This produces faster, larger bubbles and is generally more cost-effective, though the carbonation dissipates more quickly once the bottle is opened.

Sparkling wines range from bone-dry to sweet, depending on residual sugar levels and producer intent. They are commonly served as aperitifs or celebration wines, though many regions produce sparkling wines suited to food pairings. Swan Valley producers offer various styles reflecting local terroir and winemaking approaches. If you're interested in tasting local sparkling wines, many cellar-door tastings feature these releases alongside still wines.