Christmas lunch off the menu for most More than one in four Britons has never cooked or helped to prepare the Christmas dinner, a survey suggests. Younger people are most culpable, with 44 per cent of under-45s not getting involved, and almost a third still relying on their parents for the festive feast. The poll, for HelloFresh.co.uk, found that the "golden age" when people first cook or help with Christmas dinner is 23. But 28 per cent of Britons have yet to do that.