As part of  the NPD Process  all  recipes and Ingredients will have been checked and validated to ensure that the correct on pack claims are made.

Caramelised Red Onion

Barley Malt Vinegar is an ingredient within  the caramelised red onion relish. The gluten is destroyed during the process of making barley malt vinegar but barley is still required to be treated as an allergen on the back of our packs. Due to the gluten being destroyed the product claim " gluten  free "  ( less than 20 ppm in the  finished product ) is able to be made.

Coeliac UK said this- 

'Barley malt vinegar is made using a fermentation process. This means that the amount of barley in the end product is extremely small & well below a safe level for people with coeliac disease.'