This recipe can be adapted for an Instant Pot. Place a trivet in the Instant Pot and set the corned beef on top. Add 1 quart of beef broth to the pot, then seal it and set it to high pressure for 90 minutes. Once done, do a rapid release of the pressure. Remove the corned beef to a plate and cover it with foil to keep warm. Take out the trivet and add the potatoes, carrots, and cabbage wedges to the hot broth. Seal the Instant Pot again and set it to high pressure for just 4 minutes. Once done, serve immediately.