- Spray a medium sized crock pot with cooking oil 
- Salt and pepper your pork roast and place in the crock pot 
- In a medium saucepan warm 2 TBS olive oil 
- Saute your onions and garlic until golden and transparent in the oil 
- Add your salsa verde to the onions and garlic, stir 
- Add your oregano to this mix, stir 
- In a blender put your tomatillos with just barely enough water to cover them, blend to liquidity 
- Pour your onion, garlic, salsa verde mixture over your pork roast 
- Pour your blended tomatillos over your pork 
- Cook on high for 1 hour and then change to low for 6 hours 
- Shred your pork with a fork and let cook on low for another hour or ready to serve 
- Serve in soft tacos with all your favorite fixings, like grated cheese, sour cream, salsa, chopped tomatoes, cilantro