left a roast cooked for 8 hours out, is it bad?

I would not trust it. if you would have kept the slow cooker on all night then it would have been fine. but I wouldnt risk any kind of meat that sat out longer than an hour.

Is it beef or pork?

Beef is less likely to cause problems than pork, and my health inspector will probably shoot me for saying this, but beef will probably be just fine even if it was left out all night.

Just make sure when you reheat it that you bring it up to temperature quickly to kill off any bacteria that might be starting to grow…heating it up slowly will only encourage bacteria breeding.

food poisioning bacteria multiply fast , they multiply between 5 and 63oc , one germ can multiply more than 4 million in just 8 hours , becareful as they are very hard to detect as they do not affect taste appearance or smell of the food . cooling food should be done completed witin 2 hours after cooking . you may eat it and be perfectly fine but then food poisioning bacteria (bacillus cereus) can have an incubation period of 8 - 16 hours . this bacteria is found in meat dishes that have not been cooled and stored properly after cooking . hope this helps

probably is bad. knowing all the germs and bacterias tere are.

xxx

no its fine, lol thats how a slow cooker works!!