Bitterballen is one of the most favorite dutch snack. In past time, bitterballen commonly served for the appetizer before the main meal. But this time bitterballen also enjoyed in a variety of outdoor activities such as picnics and various children's party. Usually, bitterballen made with fresh beef and beef stock. But at this recipe, I modified using corned beef, milk, and edam cheese. The result is very delicious! Crunchy outside, tender inside. My son love cheese very much, this recipe is his favorite because of the cheese! He cook it himself!