a structure in the chloroplast of photosynthesizing cells, usu. one of an interconnected stack, having a pigmented membrane that is the site of photosynthesis. [< German Thylakoid (1961) < Greek thÈ³lakoeidá¸s resembling a bag =thylak(os) sack + -oÄidÄs -oid]
Round or rump roast almost two hours to reach medium rare, 3-pound roast six hours on low or longer. In a crock pot. On the stove top in a Dutch oven around two hours. Extra 15 minutes may be extended for medium or 30 minutes for well done. (source: http://www.ehow.com/way_5260879_long-cook-pound-roast.html).
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.