Crispy on the outside, fluffy on the inside– this is the ultimate masterclass in making the best roast potatoes, every time! Jamie strolls you through his essential pointers and tricks, consisting of parboiling Maris Pipers, chuffing them up for extra crunch, the secret splash of vinegar, and 3 amazing flavor mixes: goose fat, rosemary & garlic olive oil, and butter with clementine. Plus, Jamie is signed up with by Friend and Petal to reveal you how to…