Place turkey (breast side up) on rack placed inside a roasting pan
. Pry your fingers in between the skin and meat of the turkey and work 3 tablespoons of butter under skin on breast and legs. Rub 1 additional tablespoon butter on the outside of the skin. Season with kosher salt and freshly ground black pepper. Tuck wing tips under body and stuff the cavity of turkey with aromatics if desired. Tie legs together with kitchen twine.