Preheat the oven to 450°F (232°C).
To the bottom of a roasting pan or large casserole dish, add two pieces of lemon, two pieces of orange, carrots, a leek, potatoes, reserved spine, giblets, and trimmings. Add the turkey on top of the vegetables. Use the remaining orange and lemon wedges to prop the wings away from the breasts.
1 lemon, 1 orange, 4 rainbow carrots, 1 leek, 1 pound rainbow baby potatoes
Remove the turkey from the refrigerator, and place it on a large cutting board.
Using your fingertips, gently separate the skin from the breasts, thighs, and drumsticks.
Measure out ¼ cup (60 milliliter) of compound butter from the remaining butter and set aside. Melt the remaining ¼ cup (60 milliliter) of compound butter, and mix it with white wine and pepper. Soak a large cheesecloth in the wine and butter mixture.
¼ cup compound butter, 2 cup dry white wine, 1 teaspoon pepper
Working with a few teaspoons at a time, add the ¼ cup (60 milliliter) of reserved compound butter underneath the skin of the turkey, gently pushing it all over the breasts, thighs, and drumsticks.
Cover the entire turkey with the soaked cheesecloth. Cut the cloth into three pieces, one to cover the center breasts and two others for the leg and thigh sections. Cut additional cheesecloth pieces as necessary to ensure breasts, thighs, and drumsticks are completely covered.
Transfer the turkey to the oven, and bake for 30 minutes.
Remove the turkey from the oven, and reduce the temperature to 350°F (176°C). Using the remaining wine and butter mixture, baste the turkey through the cheesecloth. Return to the oven for 30 minutes.
Repeat the basting process using any remaining liquid and a turkey baster to re-deposit turkey drippings on top of the cheesecloth. Return to the oven, and cook for 30 minutes.
After an hour and a half of cooking, remove the turkey from the oven and remove the cheesecloth from the breasts only. Keep the drumsticks and thighs covered to prevent over-browning. Baste again, using the turkey baster and turkey drippings.
Return the turkey to the oven and cook until the internal temperature reaches 155°F (69°C) and the skin is crispy and brown. About 30 more minutes.
Remove from the oven and remove the remaining cheesecloth. Move the turkey to a cutting board to rest. Let the turkey rest for 20-30 minutes while preparing the gravy.
Once the turkey is rested, separate the breasts from the breastbone, and slice into ½-inch thick slices. Remove the thighs and the drumsticks, and place them on a serving platter with the sliced turkey breasts.
Reserve any drippings, and add them to the gravy. Whisk to combine.