trim fat from pork roast.  place in crockpot.  remove top from chilis and chop or puree.  chop or puree onion.  remove cilantro leaves from stem and finely chop.  I use half a bunch because we LOVE cilantro. pour all over pork roast.  mix seasoning packet in with veggie you puree or with water.  pour over pork.  let cook about 6 hours on high, or until you can easily shred pork with two forks.

I came up with this through hit and miss so I don't even remember what it started with.