Remove husks and wash tomatillos.
Chop tomatillos, jalapeno, onion and mince garlic.
Put chopped veggies in food processor. Pulse until salsa consistencey.
Heat oil an a large skillet over high heat.
Cut chicken into desired size and salt and pepper both sides.
Brown chicken on both sides.
Reduce heat to medium. Add "salsa" mixture and vinegar to chicken.
Bring mixture to a boil, cover and reduce heat to low.
Simmer covered for 1 hour, stirring occasionly.
Salt and pepper to taste (generously) and add juice of two limes. Stir well.
Serve chicken over white rice with lots of the "salsa chunks and juices" Sprinkle a big pinch of fresh cilantro on top. Enjoy : )