Cut the brisket in half so it will fit in the bowl of your Instant Pot. Rinse it with cold water. Place the trivet into the instant to prevent it from sticking to bottom. If it isn't too large, you might not need to cut it. Place it in, fat side up.
Layer the potatoes, carrots and then cabbage over the cooking liquid. Place lid back on and set to manual high pressure for 3 minutes. Use the quick release method.
"This was just perfect! My husband’s favorite meal is corned beef and I’m always looking for more opportunities to use my Instant Pot, so this was perfect!"