1 (12 pound) whole turkey, neck and giblets removed
•
2 tablespoons unsalted butter
Instructions
Combine water, salt, parsley, coriander, peppercorns, mustard seeds, garlic powder, and bay leaves in a large stockpot and bring to a boil. Boil until salt has dissolved, about 2 minutes. Let cool for 15 minutes. Stir in buttermilk.
Rinse turkey in cold water. Place in a brining bag and pour buttermilk brine over top. Refrigerate for 24 hours, turning occasionally.
Discard the brine and rinse turkey thoroughly in cold water. Pat turkey dry with paper towels and place breast side up in a roasting pan. Rub butter over all of the skin and let turkey sit for 1 hour.
Preheat the oven to 350 degrees F (175 degrees C).
Cook turkey until an instant-read thermometer inserted into the thickest part of thigh, near bone, reads 165 degrees F (74 degrees C), about 3 hours.