What foods have sulphites in them?

December 18, 2025 •

2 min read

According to the Food and Drug Administration (FDA), sulfites must be declared on food labels when present at levels of 10 parts per million or more. This disclosure is critical for the estimated 1% of the population who may have a sulfite sensitivity, and for anyone wondering what foods have sulphites in them. These compounds are used as preservatives to prevent spoilage and discoloration, and are found in a wide array of products.

Quick Summary

Sulphites are found in many foods and beverages, including wine, beer, dried fruits, and processed potatoes. They also occur in condiments, sauces, and some canned goods. Individuals with sulfite sensitivity, particularly those with asthma, must read labels carefully and be aware of common hidden sources.

Key Points

Dried Fruit is a Major Source: Dried fruits, particularly brightly colored varieties like apricots, often contain very high concentrations of sulphites to prevent discoloration.
Wine and Beer Contain Sulphites: Sulphites are used in winemaking and brewing to inhibit spoilage and oxidation, with sweet wines generally containing higher levels than dry ones.
Processed and Packaged Foods: Condiments, sauces, processed meats, and frozen potatoes are common hidden sources of sulphites as preservatives.
Labeling is Mandated: In many regions, sulphites must be declared on food labels when present above 10 parts per million, making label-reading essential for sensitive individuals.
Sensitivity Differs from Allergy: While sulphite sensitivity is often linked to asthma, it is a form of intolerance and not a true allergy, though it can still cause severe reactions.
Natural vs. Added Sulphites: All wine contains some naturally occurring sulphites from fermentation; 'no sulfites added' does not mean a product is entirely sulfite-free.
Cooking Minimizes Risk: Preparing food from fresh, unprocessed ingredients is the most effective way to control and avoid sulphite intake.

Common Food and Drink Categories Containing Sulphites

Sulphites, or sulfites, are a group of sulfur-based compounds that act as preservatives and antioxidants. While they occur naturally in some foods, they are most often added to commercial products to maintain color, extend shelf life, and prevent the growth of harmful bacteria.

Beverages

Sulphites are frequently found in a variety of beverages:

Wine and Beer: Used to inhibit yeast, bacteria, and prevent oxidation. Sweet wines often have higher levels.
Juices: Bottled lemon and lime juices, and some fruit concentrates.
Soft Drinks and Ciders: Some use sulphites as a preservative.
Vinegars: Types like wine vinegar may contain sulphites.

Fruits and Vegetables

Several fruit and vegetable products commonly contain sulphites:

Dried Fruits: Apricots, raisins, and prunes are often treated to prevent browning and spoilage.
Processed Potatoes: Includes frozen fries, dehydrated potatoes, and instant mashed potatoes.
Maraschino Cherries: Preserved cherries use sulphites to maintain color.
Certain Fresh Produce: May be found on fresh grapes or in some restaurant salad bars.
Canned Products: Some canned fruits and vegetables might contain sulphites.

Processed Meats and Seafood

Sulphites can be present in:

Processed Meats: Deli meats, hot dogs, and sausages.
Seafood: Shrimp and other shellfish are sometimes treated.

Condiments and Packaged Foods

A range of packaged goods and condiments may contain sulphites:

Condiments: Sauces, gravies, and mustard.
Baked Goods: Crackers and pie doughs.
Jams and Jellies: May contain sulphites in thickeners.
Snack Foods: Especially those with dried fruits.

Comparison of Sulphite Content in Common Foods

This table highlights the typical range of sulphite concentrations in different food categories. Levels can vary by product and region.


Food Category	Typical Sulphite Concentration (mg/kg or mg/L)
Dried Fruits (Apricots)	Up to 2000
Wine (White and Rosé)	Up to 200
Wine (Sweet)	Up to 400
Pickles	Up to 500
Processed Potatoes	50-100
Beer and Cider	100-250
Fresh Grapes	Varies (often treated for transport)

How to Avoid Sulphites

Managing a diet to avoid sulphites involves:

Reading Labels: Check ingredient lists for sulphites, which are often declared above 10 ppm.
Choosing Alternatives: Look for sulphite-free wines or organic options.
Home Cooking: Preparing meals with fresh ingredients helps control content.
Dining Out Awareness: Ask about ingredients in restaurants, particularly for salads and prepared foods.
Understanding Terms: Sulfite sensitivity is distinct from sensitivity to sulfates or sulfur drugs. 'No sulfites added' does not mean entirely sulfite-free due to natural fermentation processes.

The Role of Sulphites in Winemaking

Sulphites have a long history in winemaking. Winemakers add them to prevent oxidation and control microbial growth, preserving flavor and extending shelf life. While fermentation naturally produces some sulphites, added amounts vary, often being higher in sweet wines.

Conclusion

Sulphites are widely used food additives present in numerous products, including dried fruits, wine, processed items, and condiments. While generally safe, individuals with sensitivity, especially asthmatics, should carefully check labels and be aware of common sources to manage their intake.

Frequently Asked Questions

The primary purpose of adding sulphites is to act as a preservative. They prevent oxidation, which can cause food to turn brown, and they inhibit the growth of bacteria and yeast that cause spoilage, thus extending the product's shelf life.

Yes, sulphites are naturally produced in small amounts during the fermentation process. For example, all wine naturally contains some sulphites as a result of yeast metabolism.

Sulphites do not cause a true allergic reaction involving the immune system's IgE antibodies, but they can trigger allergy-like symptoms in sensitive individuals, such as those with asthma. These reactions can range from mild to severe.

Dried fruits that retain a bright color, such as apricots and some raisins, are often treated with higher levels of sulphites to prevent browning. Darker fruits, like some prunes, may contain lower or no added sulphites.

Sensitive individuals should inform restaurant staff about their condition and ask about ingredients. They should be especially cautious with dishes like salads and fried potatoes, which may have been treated with sulphites to maintain freshness.

No, sulphite sensitivity is different from a sensitivity to sulfur. The two are distinct chemically. People who react to sulphites do not need to avoid sulfates or sulfur medications, unless they are advised to by a healthcare professional.

In many countries, a 'Contains Sulphites' label is required on products with a sulphite concentration of 10 parts per million or higher. This indicates that sulphites were intentionally added or are present at a level significant enough to potentially cause a reaction in sensitive individuals.