Christmas dinner is a joyful occasion, but isn鈥檛 always easy. Fortunately, a little bit of science can go a long way. If you want to perfect those crisp, buttery roast potatoes, flamb茅 the tastiest, boozy Christmas pudding, and win over even the most hardened Brussels sprout hater, then look no further. This week’s Science with Sam has some science tips for a better festive meal.