Bovaer BS

Shoppers also threatened to boycott dairy products made by the Danish firm and sold in Tesco, Morrisons and Lidl, which include Lurpak butter, after the company announced a trial that would involve giving a feed additive called Bovaer to its cows.

Arla Foods has hit back pointing out that the chemical, which would be introduced to cattle’s food, is designed to reduce the amount of methane they produce in digestion, a gas that contributes to climate change.

It has been declared a safe additive by both European and UK regulators as it doesn't transfer into milk.