On Instant Pot™, select SAUTE; adjust to normal. Melt butter in insert. Add pork; sear 2 to 4 minutes on all sides or until browned. Select CANCEL.
In small bowl, mix broth, brown sugar, soy sauce, garlic and salt. Pour over pork in insert. Secure lid; set pressure valve to SEALING. Select MANUAL; cook on high pressure 90 minutes. Select CANCEL. Keep pressure valve in SEALING position to release pressure naturally.
When cool enough to handle, shred pork, and toss with 1 cup of the cooking liquid; discard remaining cooking liquid.
Notes
This pulled pork works well stuffed into tacos or pitas, served over rice or mashed potatoes, or piled on buns.
Cutting the pork in several large pieces allows the meat to cook quickly and evenly in the pressure cooker.
When releasing pressure naturally, it’s always a good idea to set the pressure valve to VENTING after the float valve drops down, just to be sure all of the pressure has been released.