Bloom the yeast in lukewarm water for 10 minutes.
Scald milk, then add butter, sugar, and salt. Cool until lukewarm.
Combine yeast and milk mixtures. Beat in eggs. Gradually add flour to form a soft dough. Knead until smooth and elastic.
Let the dough rise until doubled in size.
Brown ground beef in a pan, then add onion and cabbage. Saute with caraway seeds, garlic, and dill. Deglaze with pickle brine. Season to taste.
Punch down risen dough and let it rest. Divide into balls, roll each into a circle, add filling, and seal.
Let the bierocks rise again. Brush with butter and bake.
Serve with German potato salad, pickles, and beer.
