Test cook Julia Collin Davison uncovers the secrets to making the best Pepper-Crusted Beef Tenderloin Roast. Next, equipment expert Adam Ried reveals his top pick for pepper grinders in the Equipment Corner. And finally, test cook Bridget Lancaster shows host Christopher Kimball how to make perfect Roast Butterflied Leg of Lamb with Coriander, Cumin, and Mustard Seeds at home.