In order for food and beverages to be certified, at least one allergy-inducing ingredient (e.g. gluten or lactose) must be demonstrably removed using suitable processes so that a certain limit value is not exceeded. The organisation must also have an appropriate allergen management system in place. Under certain conditions, food and beverages that do not naturally contain the allergy-inducing substance can also be certified.

The detailed criteria for food certification can be found here.