Porchetta is an easy recipe for pork tenderloin. Batali's recipe works well. If butterflying the tenderloin is an issue, ask the butcher to do it for you. Let the filling squeeze out a it at the top, makes a yummy crust

Leagle49 - rice wine vinegar is great in chicken or pork marinades

Cruzer - if jerking a tenderloin would score crisscoross to get the jerk paste "deeper" into the meat - and if you nicely jerked it, maybe finish with a thinned with rum apicot glaze!

For the tips on the tenderloin, if you don;t want to bother with them, wack them off, save in a zip lock in the freezer until you have enough for a stir fry

J&B