Ovenbaked Pork Loin
["2 to 2 1/2 lb. fresh pork loin (bone in)", "1/2 c. chopped onion", "1/2 c. chopped celery", "2 Tbsp. butter", "3 Tbsp. tomato puree", "2 Tbsp. cider vinegar", "2 Tbsp. molasses"]
["For basting sauce, saute onion and celery in the butter until soft.", "Add tomato puree, vinegar and molasses.", "Blend well."]
["fresh pork loin", "onion", "celery", "butter", "tomato puree", "cider vinegar", "molasses"]