You've probably heard of sulphites in wine, but did you know they can also be found in beer? What exactly are sulphites, and what role do they play in brewing? Here's everything you need to know before pouring your next pint.
What are sulphites?
Sulphites are chemical compounds derived from sulphurous acid (H2SO3). They’ve been used for centuries in the production and preservation of alcoholic beverages like wine and beer. Known for their antioxidant and antibacterial properties, sulphites are also found in products like dried fruits, jarred pickles, and processed potatoes.
In brewing, sulphites may be added during production as microbial inhibitors or oxidation preventers, helping to preserve the aroma, taste, and stability of the beer over time. While some sulphites occur naturally during fermentation, others are added intentionally to extend shelf life.
Are sulphites bad for your health?
In recent years, various scientific studies have raised concerns about excessive sulphite intake. In high doses, sulphites have been linked to headaches, digestive issues, and reduced gut bacteria diversity. While most people tolerate them well, individuals with sulphite sensitivity or asthma may experience adverse reactions.
For transparency, the presence of sulphites must be indicated on the label of any beverage (including beer) when their concentration exceeds 10 mg per litre. You'll usually spot them under their E-number codes (such as E220 to E228) on the label or ingredient list.
Do beers contain sulphites?
The answer is: yes, some do. Before purchasing your favourite brew from PerfectDraft, you can check the product label to see if sulphites are present. Some beers, especially organic or craft beers, may be brewed without added sulphites, offering a more natural alternative.
Brewing at home? Sulphites are available too
If you're a homebrewer, you can also purchase brewing-grade sulphites (typically potassium or calcium-based) directly from our shop. These additives allow you to control the level of preservatives in your beer, depending on your needs and the preferences of your tasting panel!
Whether you're enjoying a cold pint or brewing your own batch, understanding sulphites is essential for anyone passionate about beer.
ALCOHOL ABUSE IS DANGEROUS TO YOUR HEALTH. DRINK RESPONSIBLY.
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