More videos from this episode Science of Starch Why do we break our own rule and mix potatoes in a food processor when it comes to Aligot? Vegetables Aligot Mashed Potatoes French cookery’s intensely rich, cheesy take on mashed potatoes flouts the rules. To Americanize the dish, we ignored a few more. Vive la résistance! Meat Roast Beef Tenderloin The classic approach to roasting this prime cut sacrifices juiciness for crust. Why settle for anything less than perfection? Cutlery Slicing Knives Slicing a roast, ham, or turkey doesn’t require expert knife skills. But producing thin, even slices of meat can be next to impossible if you don’t have the right knife.