Italian Beef with vinegar

1 lb ground round 1 cup freshly grated parmesan cheese 2 egg yolks salt & fresh ground pepper 2 tablespoons butter 1/4 onion , thinly sliced 1 tablespoon[...]

1 garlic clove 1 lb hamburger 1 medium onion 1 large red bell pepper 1 large green bell pepper 1/4 cup water 2 tablespoons red wine vinegar 1 ounce onion soup[...]

1 lb ground round 1 cup freshly grated parmesan cheese 2 egg yolks salt & fresh ground pepper 2 tablespoons butter 1/4 onion , thinly sliced 1 tablespoon[...]