sentence: take butter in a grill pan and add chopped onions garlic and grill it for about 15 minutes sentence: pour the beer into the pan and stir it sentence: place the bratwurst on the grill and cook them until brown for about 10-15 minutes sentence: transfer the bratwurst into the pan and cover it with aluminum foil and let it cook for 20 minutes sentence: remove the foil and cook for about 15 minutes sentence: serve it with bun and potato chips