I have a question about the recipe "Cuban Pulled Pork Tacos" from NakedBeet. Should I reserve left over marinade for boiling, or should I use the marinade that the pork sits in? Is it safe to use the marinade if it has had raw meat in it? Also, would you recommend adding some canola oil before roasting the pork, or will it release enough fat to keep it from sticking and burning? Thanks!