The spleen is an organ in the upper left abdomen, which filters blood, disposes of worn-out red blood cells, and provides a 'reserve supply' of blood. It contains both red tissue, and white lymphatic tissue. The major (encapsulated) lymphatic organs are the lymph nodes, thymus and spleen.
Place the brined corned beef in a large pot or Dutch oven along with the liquid and spices that accompanied it in the package. Pour in enough water to cover the beef, then bring the water to a boil on the stovetop. Reduce the heat to a simmer, and cover the pot. A three-pound corned beef could take three hours or more to become perfectly tender. Check the meat occasionally, adding more water if necessary. The beef is ready when it pulls apart easily.
Cook the beef for another 17 minutes per 450g (1lb). This will give you rare beef. For medium cooked beef add 15 minutes more, or for well done beef add 30 minutes more-the additional time is for the whole joint not per 450g / 1lb.You can tell if the joint is cooked to your liking by sticking a skewer into the middle of the joint.his will give you rare beef. For medium cooked beef add 15 minutes more, or for well done beef add 30 minutes more-the additional time is for the whole joint not per 450g / 1lb. You can tell if the joint is cooked to your liking by sticking a skewer into the middle of the joint.