Across the land, many will eye the distinctive box, loath to take on board yet more calories, but say 'oh, go on' before devouring the guilty pleasure. Now, however, they will be astonished to learn ...

Under attack is the decision to package chocolate in polyethylene terephthalate (PET), the plastic resin commonly used to bottle drinks. The Vevey-based food giant launched the new-look confectionery ...