Step 1

Season the pork with the salt and pepper.

Step 2

Using your hands, rub the brown sugar on the pork, then set it aside.

Step 3

Turn the Instant Pot to the sauté setting and add the olive oil, garlic, and onion. Sauté until the onion is translucent, about 5 minutes.

Step 4

Add thyme and vegetable broth to the pot.

Step 5

Place a trivet in the Instant Pot and place the pork on top of the trivet.

Step 6

Close the lid and set the valve to the sealing position. Cook on high pressure for 1 hour and 30 minutes.

Step 7

Turn the valve from seal to vent in order to quickly release the pressure.

Step 8

Add the potatoes, celery, and carrots. Close the lid and set the valve back to the sealing position. Cook on high pressure for 5 minutes.

Step 9

Once again, quick release the pressure.

Step 10

To serve, scoop out the vegetables onto a serving platter. Remove the pork shoulder from the Instant Pot, and place it on the serving platter. Slice it up and serve with the vegetables.