What is "bierock"?

Bierock, also known as runza or krautburger, is a savory pastry that originated in Eastern Europe and is popular in several regions of the United States. It is made by filling a yeast dough with a mixture of ground beef, onions, and cabbage or sauerkraut, and then baking it until the dough is golden brown and the filling is hot and flavorful. Bierock may also include other ingredients such as cheese or spices. The pastry is often served as a handheld meal or snack, and is a popular food item at bakeries, cafes, and restaurants in the regions where it is popular.