a medium bowl, mix teriyaki sauce, red wine vinegar, vegetable oil,
brown sugar and red pepper flakes. Place pork tenderloin cubes in
the mixture and toss to coat.
Preheat outdoor grill for high heat and lightly
oil grate. Place pork on skewers. Cook on the grill, turning and
brushing with teriyaki sauce frequently. Cook 10 to 12 minutes.