There's no need to spend hours in the kitchen to rustle up a banging Christmas dinner. If you've drawn the short straw and are in charge of the roast this year, the chances are you're already stressed. You'll inevitably spend the big day fretting if the turkey will be dry, whether the Yorkshire Puddings will rise, or whether your roast potatoes will be crispy enough. Then, of course, there's the veg. Luckily, Jamie Oliver has shared a 10 minute hack to get your greens in over the Xmas holidays