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Before you do anything else, switch on your oven. Let it warm up to 350F (177C) while you prepare your drumsticks. Grip the skin near the bone and gently peel it toward the top of the drumstick. Don't pull it off entirely; just peel it back, so you can tuck butter and seasonings underneath. Turkey drumsticks are much larger than chicken drumsticks, so you'll only need 1 per person (2 at most). This will keep the meat moist while the drumsticks bake. For larger drumsticks, you can use up to 3 tablespoons (42 g) of butter. To make the butter easier to spread, bring it to room temperature before applying it to the turkey. Use olive oil in place of butter if you're calorie conscious. With the skin still pulled down, sprinkle salt and pepper all over the turkey legs. For more flavor, try rubbing a tablespoon (about 2-4 g) of chopped herbs onto the buttered turkey meat while the skins are still pulled back. Rosemary, thyme, and sage make great seasonings for turkey. Stretch the skin back over the meat and rub another 1-3 tablespoons (14-42 g) of butter over the skin of the turkey. This will help the skin crisp up as it bakes. Use a liberal amount of both salt and pepper to bring out the best in the turkey's flavor. Use a pan large enough to easily hold all of the legs with no overlap. If you want to catch the drippings, use a metal roasting rack over a drip pan. Place them in the preheated oven for 45 minutes. Turn them over and cook them for another 45 minutes. Insert a meat thermometer into the thickest part of the meat. They are ready when the internal temperature reaches 165F (74C). To ensure that the turkey stays juicy, you can baste it every 20 minutes with a turkey baster or spoon. Use the drippings as your basting liquid, or baste with extra melted butter. Larger drumsticks may take a total of 2 hours to finish cooking. This gives the juices time to reabsorb into the flesh, making the meat juicy. Serve whole or remove the meat from the bone.

Summary:
Preheat the oven to 350F (177C). Peel back the skin. Rub 1 tablespoon (14 g) of butter over the meat of each drumstick. Season the turkey. Pull the skin over the meat and rub it with butter. Sprinkle the skin with salt and pepper. Lay the turkey legs in a roasting pan. Bake the turkey drumsticks for 90 minutes. Let the meat rest for 15 minutes before serving.