Dotty'S Sweet And Sour Meatballs
["2 to 3 lb. ground round", "1 large onion, diced", "1 c. celery, diced fine", "2 eggs", "1 pkg. saltine crackers, crushed fine", "salt and pepper to taste", "1 Tbsp. sage", "1/3 c. tomato sauce*", "1 c. sugar", "1/3 c. apple cider vinegar"]
["Set aside rest of the can of tomato sauce for later."]
["ground round", "onion", "celery", "eggs", "saltine crackers", "salt", "sage", "tomato sauce", "sugar", "apple cider vinegar"]