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.
Add the beef broth to the pan and place in the oven, uncovered. Roast until the beef is tender and registers an internal temperature of 130 to 135 degrees F, about 1 1/2 to 2 hours. Transfer the roast to a platter or cutting board and let rest for 15 minutes before carving.Meanwhile, use a slotted spoon to discard the onions and thyme sprigs. was cooking a 2 3/4 pound beef rump roast according to the directions of this recipe and after and hour of cooking I couldn't even get a fork through my roast. I then decided to turn the temperature up to 300 degrees and cover my roasting pan. Finally, at about 9:00 pm, my roast was tender.