How long do cook 30 pound roast beef?

I can't give you a specific cooking time for a 30-pound roast beef without knowing more information! Here's why:

* Cut of meat: Different cuts of beef cook at different rates. A tenderloin will cook much faster than a chuck roast.

* Desired doneness: Do you prefer your beef rare, medium-rare, medium, medium-well, or well-done? This will significantly affect cooking time.

* Cooking method: Are you roasting, grilling, or using a slow cooker? Each method has different temperature and time requirements.

To help you figure out the right cooking time, I need some additional information:

* What cut of beef are you using?

* What doneness do you prefer?

* What method are you using to cook it?

Once you provide that information, I can help you determine the appropriate cooking time.

In the meantime, here are some general guidelines:

* Rare: 125-130°F internal temperature

* Medium-rare: 130-135°F internal temperature

* Medium: 140-145°F internal temperature

* Medium-well: 150-155°F internal temperature

* Well-done: 160°F internal temperature or higher

Remember: Always use a meat thermometer to ensure your roast is cooked to your desired doneness.