This breed is also not usually found in pet stores Number Eight and Nine is the American and the American Satin Guinea Pig. They are the most common breed of Guinea Pigs as well as one of the oldest close to Abyssinian. There hair is straight back and sleek.
Insert the meat thermometer into the thickest part of the roast and put the roast in the oven. Cook rump roast for at least 1 hour and 40 minutes for rare. Make sure that the internal temperature of the meat is at least 120 F before removing from the oven.
Place the roast in the pan and sear it on all sides until golden-brown, about five minutes total. Use tongs to turn the rump roast over then needed. Heat the oven to 300 degrees. Remove the rump roast and set it aside. Turn the heat on the stove to medium and add aromatic ingredients to the Dutch oven or pan. Use 1/2 cup of standard mirepoix -- 2 parts diced onion to 1 part each diced carrots and celery -- per pound of roast.