Translation:The population eats flæskesteg with hot red cabbage.
Actually, no.....I'm not sure about the British using the phrasing this person wrote about (treating a collective noun as a plural), but in American English this is improper grammar. A collective noun is a singular group. Population is singular, as is team. Add an 's' to each to get plural. For singular the pairing is 'population eats' and 'team returns'. For plural it is 'populations eat' and 'teams return'.