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.
Here's a guide to help you know how long you can keep cuts of meat around! Kitchen Fact: Raw ground meats and poultry should be cooked in 2 days, and roasts, steaks, and chops should be cooked in five days. For raw poultry, ground meats, and other chopped-up cuts of meat, cook them within two days. Larger cuts â like roasts, steaks, and chops â can be stored a bit longer, but should be used within five days. If you don't have time to cook the meat at the end of these time periods, just freeze it, as freezing will halt any bacteria growth.