Melt bacon drippings in a pan. Add chopped onion and garlic and cook for 4 to 5 minutes or until onions are soft.
Add remaining ingredients, stir well. Simmer for 30 minutes. Puree sauce.
Salt and pepper chicken pieces and let them come to room temperature before cooking.
Brush each piece with BBQ sauce.
Cook in preheated 425 degree oven for 45 minutes or until the internal temperature of the chicken reaches 165 degrees in the thickest part.
Remove from oven, tent with foil and let rest 10 minutes. Brush with additional sauce before serving. Have extra sauce on hand to pass around.