Onion flavouring

Onion flavouring is a substance or mixture of substances that provides an onion-like taste and aroma to food. It can be derived from natural sources such as onions themselves, or created synthetically to mimic the complex flavour profile of onions. The production process often involves extraction, distillation, or chemical synthesis to isolate or replicate the key volatile compounds responsible for onion's characteristic flavour.

Manufacturers use onion flavouring to impart or enhance the taste of onions in a wide variety of food products without using the actual vegetable. It is commonly found in savoury snacks like potato crisps, seasonings, sauces, processed meats, and ready meals. Its function is purely to add flavour.

Flavourings are regulated in the UK. Onion flavouring is not listed as a food additive on the Register of Food Additive Authorisations, meaning it is not subject to the same regulatory framework as additives. It is generally considered safe when used as intended to provide flavour. International bodies like EFSA have evaluated flavourings, and generally, flavourings used in foods are considered to have no significant health implications at the levels typically consumed. There are no widespread controversies regarding the consumption of onion flavouring.