Rub the pork roast with liquid smoke and then sprinkle with salt.
Place in Instant Pot inner pot.
Pour the water around the roast.
Close and lock the lid.
Move the pressure release valve to SEALING.
Select MANUAL and adjust pressure to HIGH and time to 90 minutes.
When the cooking is finished, let the pressure release naturally for 20 minutes.
Turn the pressure release valve to VENTING to release any remaining pressure.
Shred the pork with two forks and toss in the juices.
Season with additional salt to taste.
