<human>:  What is the best cooking temperature for a beef roast?
<bot>: The best cooking temperature for a beef roast depends on the cut and desired level of doneness. Generally, the ideal temperature for a medium-rare roast is 135°F (57°C) or higher. For medium doneness, cook the roast to an internal temperature of 145°F (63°C). For well-done, cook the roast to an internal temperature of at least 160°F (71°C).