Sauce

• 1/2 cup ketchup

• 2 tbsp. dark brown sugar

• 4 tbsp. apple cider vinegar

• 1/2 cup whole milk or half-and-half

• 4 tbsp. ketchup

• 1/4 tsp. black pepper

• 1 tsp. table salt

• 1 small vidalia onions or small type sweet onion

• 1 egg

• 1 slice bread (broken or chopped finely)

• 1 1/2 pounds ground beef