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According to USDA, ribs are done when they are 145Â°F internal temp, but they may still be tough. If you take them up to 180Â°F, drop the oven temp to about 180Â°F and hold them at this temp for about 30 minutes, the collagens and fats melt some more at this temp and make the meat more tender and juicy.eat can cause this shrinkage. Put ribs on a hot grill and they will shrink within an hour, but they won't be done. On the other hand, if you keep the temp under 250Â°F, by the time the meat pulls back, it is overcooked. The peek-a-boo test.
Check the temperature of the roast using a meat thermometer 30 to 45 minutes before you expect the roast to be done. For example, with a 10 pound roast, you would expect 2 1/2 hours of total cooking time (15 minutes at 500Â° and 2 1/4 hours at 325Â°).In this case, check after 1 hour 45 minutes of total cooking time, or 1 hour 30 minutes after you lowered the oven temp to 325Â°. Place the roast fat side up and rib bones down in a roasting pan. Insert a meat thermometer into the thickest part of the roast, making sure that the thermometer isn't touching a bone. 5 After browning the roast at a 500Â°F temperature in the oven for 15 minutes, reduce the oven temperature to 325Â°F.