1 can (15 oz.) tomato sauce
1/2 c. brown sugar
1/4 c. vinegar
1 tsp. mustard
2 lbs. lean beef
1/2 lb. ground pork
2 eggs, slightly beaten
1/2 c. minced onions
1/2 c. bread crumbs, dry
1 tbsp. salt
1/4 tsp. pepper

Preheat oven to 350 degrees. Combine tomato sauce, sugar, vinegar, and mustard in a bowl. Mix well, set aside. Combine remaining ingredients with 1 cup sauce mixture in a bowl. Mix well. Place in lightly greased 1 1/2 quart casserole. Pour remaining sauce evenly over loaf. Bake 1 hour or until done.