1 lb. ground ham
1 lb. ground beef
1 egg
3/4 c. milk
1 c. graham crackers, crushed
1 c. vinegar
1 1/2 tbsp. powdered mustard

Mix first 5 ingredients together; form into 15 balls. Place in 9 x 13 inch pan.

Mix remaining ingredients and pour over balls. Do not cover. Bake at 350 degrees for 1 1/2 to 2 hours, turning once half way through.