Remove husks and clean the tomatillos.
Transfer to medium saucepan and add 1/2 cup of water.
Cook on medium heat until a fork can be easily inserted (about 10-15 minutes). Turn tomatillos once while cooking.
Once tomatillos are cooked, transfer to blender or food processor and puree (Carefully!).
Return to saucepan and add the jalapeno, onion, lime juice, garlic, salt, pepper, cumin and chili powder.
Simmer on medium-low heat 15-20 minutes stirring occasionally.
Add the shredded pork to the verde sauce and reheat in the sauce if necessary.
Remove from heat.