Nutella hasn’t previously based its marketing on the bloodthirsty rites of the Mayans but maybe it should think about it.

Boffins found smears of chocolate on plates dating from 500BC in the Yucatan peninsula of what’s now Mexico. It suggests chocolate was used as a condiment - not just as a drink - centuries before we thought.

The notion of Mayans smearing the stuff on the still-beating hearts on their sacrificial victims makes new-fangled mash-ups like chilli-chocolate suddenly seem rather tame.