Do not cover or add water. Place the roast in the preheated oven. Reduce the temperature to 475 degrees F (245 degrees C). Roast for 21 minutes (seven minutes per pound) then turn off the oven and let the roast sit in the hot oven for 2 1/2 hours. Do not open the door at all during this time! Remove the roast from the oven, the internal temperature should have reached at least 145 degrees F (65 degrees C).
While Ames is the largest city in Story County, the county seat is in the nearby city of Nevada 8 miles (13 km) east of Ames. Ames is the home of Iowa State University of Science and Technology (ISU), a public research institution with leading Agriculture, Design, Engineering, and Veterinary Medicine colleges.
Clinton County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 49,116. Its county seat is Clinton. Its name is in honor of the seventh Governor of New York State, DeWitt Clinton. Clinton County comprises the Clinton, IA Micropolitan Statistical Area, which is also included in the Davenport-Moline, IA-IL Combined Statistical Area.