Roasted Pork Loin and chicken breast
well if you have large caterings, we always cook food before we actually serve it, as it depends your size of kitchen and equipments available. For porkloin the ideal core temperature to be very juice is about 72 degrees celsious (HACCP says 74). just cook it first at around 70 degrees let it cool down, cut it into the the service portions and reheat in the oven just before service just brush it with little water on the surface cut or also butter.
for the chicken brest follow the same method, if roasted.
regards