Put all marinade ingredients in a gallon-size zipper-type food bag. Shake to mix, then add pork, seal tight and marinate in refrigerator overnight.
Rice
Bring rice and 2 cups water to boil in a heavy saucepan. Reduce heat to low, cover, and cook 15 to 20 minutes until all water is absorbed.
Remove from heat. Sprinkle with vinegar and toss with a fork to coat. Cover to keep hot.
Pork
Remove pork from marinade. Broil or grill, turning once, 15 minutes or until meat thermometer registers 160°F when inserted in the center.
Shred the pork with a form and cover loosely with foil to keep warm.
Beans
Mix beans with five-spice powder. Heat in a saucepan.
When hot remove from heat, cover to keep warm.
Grilled Pineapple Salsa:
Grill or broil pineapple slices 4 to 6 inches from heat source 5 to 6 minutes per side until lightly browned.
Cool, then cut in 1/4-inch dice. Mix with remaining ingredients in a serving bowl. Makes 3 1/2 cups.
Assemble the Burritos
Layout one tortilla, top with shredded pork, pinaple, and cabbage. Fold up bottom of tortilla to partially cover filling, then fold sides in toward center. Roll up egg-roll style.
Serve with rice, beans, and Grilled Pineapple Salsa.