How long do you cook a 4lb porketta in a slow cooker on high?

To cook a 4-pound porketta in a slow cooker on high, you should plan for about 4 to 5 hours. Ensure the internal temperature reaches at least 145°F for safe consumption. For best results, you can sear the meat beforehand and add seasonings or broth to enhance flavor. Always let it rest for a few minutes before slicing to retain the juices.