1. Very cold meat won't roast evenly. Place it on the counter while preheating the oven.
2. Durable cotton kitchen string is sold at kitchenware stores, most gourmet markets and large supermarkets. Do not use sewing thread or yarn, which may contain inedible dyes or unsavory chemicals.
3. A heavy-duty, high-sided roasting pan is essential for conducting heat evenly. Never substitute a cookie sheet. A broiler pan will work in a pinch, but the roast will inevitably be somewhat chewier.
4. Give it a rest. A roast's internal temperature will rise about 10 degrees while resting. The natural juices will also reincorporate into the meat's fibers and the skin or crust will dry out slightly for a more toothsome yet more succulent dinner.