Pulled Pork - Instant Pot

1 (4-5 lb) pork shoulder or butt
2 tbls brown sugar
1 tbls chili powder
2 tsp paprika
2 tsp salt
1 tsp pepper
1 tsp dry mustard
1 tbls vegetable oil
1-1/2 cup chicken stock or broth
2 tbls cider vinegar
1 tsp liquid smoke

1. Cut pork into 2-inch thick slices.
2. Combing spices and brown sugar.  Rub on surfaces of pork.
3. With cooker's lid off, heat oil on high and brown the pork.
4. Add broth, vinegar and liquid smoke.  Lock on the lid and set for 100 minutes on high.
5. Let the pressure release naturally for 15 minutes before quick release.
6. OPTIONAL - remove pork from cooker, drain all liquid, heat 16 ounces of BBQ sauce on high and add the pork before serving.

Notes:

• I didn't do the BBQ sauce step because it was quite flavorful without the sauce.  Don't skip the liquid smoke.
• Very good!