Sulphite-Free Wines

The Role of Sulphites in Wine

The most common sulphite in wine is sulphur dioxide, a compound that forms naturally during the fermentation process as yeast converts sugar into alcohol. Because of this, all wines contain some sulphites.

Since ancient Roman times, we have known that adding sulphites to wine helps protect it from bacterial growth and oxidation. Winemakers today continue this tradition, adding sulphites at different stages of production to create a stable wine with a longer shelf life. Many preserved foods and drinks, from pickled onions to frozen French fries, also contain sulphites for this reason.

Sulphite Sensitivity

Around 4% of people have a sensitivity to sulphites, which may trigger mild to severe allergy symptoms because of the release of histamines. This reaction is more common in individuals with asthma, but anyone can be sensitive to sulphites.

To help prevent negative reactions, many countries require food and drink labels to disclose sulphite content. As a result, some people without sensitivities may also be wary, even though the compounds won’t affect them. However, for those who are sensitive, knowing which wines contain sulphites and which don’t is essential.

Frequently Asked Questions

What are sulphites in wine?

Sulphites are sulphur containing compounds added to wine as a preservative. They help prevent oxidation, spoilage, and bacterial growth, extending the wine’s shelf life.

Are sulphites bad for you?

Sulphites are generally safe for most people, but a small percentage, particularly those with asthma, can be sensitive to them. In sensitive individuals, sulphites may cause headaches, hives, or breathing difficulties.

Do all wines contain sulphites?

Yes, most wines contain naturally occurring sulphites as a by-product of fermentation. Many winemakers also add sulphites to help stabilise the wine, preserving its flavour and longevity.

Why do wines have a ‘contains sulphites’ warning label?

In many countries, wines with over 10 mg/L of sulphites must carry a warning label to alert people with sulphite allergies or sensitivities.

Are organic wines sulphite-free?

Not necessarily. Organic wines often contain less added sulphites, but they may still have naturally occurring sulphites. Some wines, organic or not, have no additional sulphites, so check the label if you are sensitive.

Do sulphites cause wine headaches?

The link between sulphites and wine headaches isn’t scientifically proven. Other compounds, such as alcohol and histamines, are more likely causes of wine-related headaches, especially in people who are not sensitive to sulphites.

How can I find low-sulphite wines?

Look for wines labelled “no added sulphites” or “low sulphites.” Organic and biodynamic wines typically have lower sulphite levels. Try our selection below...

Wine to Try

Domaine Coste Rousse Thalia White

This intriguing sulphite-free Chardonnay is bottled unfiltered, delivering a complex nose and a rich palate. From the sunny Languedoc region in France, it offers aromas of golden apple and white flowers over a balanced palate. A fantastic choice to pair with white meat and creamy sauces.