Preheat oven to 500deg.
Slit pork in several places, rub salt and
liquid smoke into pork. Wrap pork with ti leaves,
then in the foil, place on a small rack in a baking pan,
Lower heat to 400 deg., bake for 4 hrs.
Add sweet potatoes or yams the last 1/2 hrs to the pan.
Shred pork and add juices from the pan to the pork,
according to your taste.
(note: Liquid Smoke is available in supermarkets
in the BBQ section)