Pat the turkey dry. Rub the dry brine all over the outside of the turkey. Loosen the skin on the turkey breast and place some of the dry brine under the skin.
Place the turkey on a rack in a roasting pan and cover loosely. Let the turkey sit in the refrigerator for 48 hours.
Uncover the turkey. Let it sit uncovered in the fridge for 12-24 hours.
Preheat the oven to 450 degrees F.
Tuck the wings of the turkey under the body.
Stuff the cavity of the turkey with the lemon, onion and garlic.
Place the butter and pepper in a bowl and stir until well combined.
Spread the butter all over the turkey, both on top of and underneath the skin.
Tie the turkey drumsticks together with kitchen twine.
Cook for 30-40 minutes or until turkey has started to turn golden brown.
Reduce the heat to 350 degrees
Bake for another 2 hours, or until a thermometer inserted into the thickest part of the thigh reads 165 degrees F. I also check the thickest part of the breast to make sure that it's the correct temperature. If your turkey is getting too dark, you can cover the top with foil.
Transfer the turkey to a serving platter and garnish with herbs and fruit if desired. Let the turkey rest for 20 minutes, then slice and serve.