Jimmy Doherty, Kate Quilton, Matt Tebbutt and Helen Lawal present tips on how to feed family and friend better, cheaper and faster at Christmas. They test three novel turkey-cooking methods against the clock - including deep-frying a whole bird - and share time-saving tips for preparing parsnips. They explore whether champagne is worth its hefty price tag, investigate whether digestif drinks really do help after a big meal and explore the psychology of why people cannot stop dipping into the chocolate box.