Each group contained 25 cattails. All of the groups were grown in the same type of soil, they all received the same amount of light, and they were all kept at the same
Cooking at a constant oven temperature of 300Â°F (160Â°C), a 5- to 8-lb standing rib roast will take 17-19 minutes per pound for rare, 20-22 for medium rare, 23-25 minutes for medium, and 27-30 minutes for well done.ow long and at what temperature should I cook a beef roast in the oven? Roasting is a great cooking method for a large, tender cut of beef  such as a rib or sirloin roast.
Steaks (3/4 thick): Broil/Grill 4 to 5 minutes per side for medium rare, 145 degrees F. Stew or Shank Cross Cuts (1 to 1 1/2 thick): Cover with liquid; simmer 2 to 3 hours for medium, 160 degrees F. Short Ribs (4 long and 2 thick): Braise 325 degrees F for 1 1/2 to 2 1/2 hours for medium, 160 degrees F.tandard Cooking Times. The USDA recommends the following cooking times: Rib Roast (bone in, 4 to 6 lbs.): Roast at 325 degrees F for 23 to 25 minutes per pound for medium rare, 145 degrees F. Rib Roast (boneless rolled, 4 to 6 lbs.): Roast at 325 degrees F. Add 5 to 8 minutes per pound to above Rib Roast.