My aunt who loves to cook spicy food, passed this down to me since I never had someone to show me how to cook out of my culture. She always helps me out. I really like this because it's spicy and delicious.
place them in a pan with water (filled to the top),add your garlic (or you'll have bad taste of pork).
simmer on low for 1 1/2 hours.
while the meat is cooking: place the chiles and tomatillos on a seperate pan to roast (make sure they do not burn, but just get a roasted on each side blend the tomatillos 2/3 cup of water and 1 tsp salt well,place aside).
blend the chile arbol peppers with 1/3 cup of wate and 1 tsp salt, place aside when all the water is gone in the pan with the meat pour your oil and fry the pieces of meat slightly.