Preheat oven to 400 degrees F.
Slit the pork in several places and rub the salt, liquid smoke, and Worcestershire sauce all over the pork butt.
Wrap the pork in the banana leaves and then wrap it in foil. Place pork in a 9 by 13-inch pan and bake for 4 hours.
Once pork comes out of oven, shred with a fork and serve.
Recipe courtesy of Old Lahaina Luau, Lahaina, HI