In a food processor or blender, purée the vegetables, and pour over the pork.
Add spices and mix well. Cover and marinate for 1-2 hours if possible.
Turn on smoker to 220F, place a pan of water in it, and use your favorite wood chips (I used maple just because)
Brush off all the marinade off the pork (reserve this marinade). Smoke the pork until it registers 150F (about 2 hours) and then let it rest, covered with foil.
In a small nonstick pan heat the reserved marinade. You want this well cooked. After it has sizzled well, add in the half and half, cook until thick and remove.