(Telegraph) - Wine additives such as extracts of dried fish bladders and animal pancreases should be listed on bottle labels to discourage their use, according to France’s first female Master of Wine.

Isabelle Legeron said few wine drinkers realise what goes into their favourite vintage, even if they are aware of the use of preservatives such as sulphites, which are shown on labels. She called for all ingredients to be listed. 

Many wine buffs, she said, are “really careful in what they consume, and yet they don’t know the bottle they are about to pop open for their birthday is made with a fish derivative, known as fish leather. It’s routinely used in white and sparkling wines. It’s a binding agent.”