When we hear liver we may instantly think of liver and onions, a dish that was commonly servedbut not necessarily likedduring the mid-1900s. This combination became somewhat standard because cooks found out the onion cut through the "Metallic" Taste of the liver. But there is more than one way to prepare liver, and this slow-cooked recipe featuring bacon, carrots, celery, onion, and stewed tomatoes will change your mind about cooking liver. The liver is tender and delicious when simmered all day in this rich and flavorful sauce.