Bitterballen are a popular Dutch snack, typically served in bars and restaurants. They are small, round balls filled with a savory mixture of beef or veal ragout, which is thickened with flour and seasoned with spices. The filling is coated in breadcrumbs and deep-fried until golden brown, resulting in a crispy exterior. These tasty bites are often enjoyed with a side of mustard for dipping. Bitterballen are commonly served as a part of Dutch cuisine and are especially popular during social gatherings and celebrations, making them a beloved treat among locals and visitors alike.