Brothers-in-law Alexander Armstrong and Giles Coren spend much of the festive season indoors eating and drinking. They'll find twelve festive drinks they can agree on. Sometimes they'll find the winner in a category together, other times they'll champion different things. In some categories they'll be sourcing their contenders; in others they'll be making their own creations from scratch. Their festive dozen will represent everything they need to ensure they're brimming over with the spirit of Christmas.