Instant Pot Guinness Corned Beef

Combine water beer and garlic in a multi-functional pressure cooker (such as Instant Pot®). Place trivet inside.

Rub all sides of brisket with brown sugar. Place on the trivet and sprinkle spice packet on top. Close and lock the lid.

Select high pressure according to manufacturer's instructions; set timer for 90 minutes. Allow 10 to 15 minutes for pressure to build.

Release pressure carefully using the quick-release method according to manufacturer's instructions about 5 minutes. Unlock and remove the lid. Transfer brisket to a baking sheet.

Cover brisket with aluminum foil; let rest for 15 minutes.

Meanwhile remove the trivet from the pot. Place potatoes carrots onion and cabbage in the bottom of the pressure cooker. Close and lock the lid.

Select high pressure according to manufacturer's instructions; set timer for 5 minutes. Allow 10 to 15 minutes for pressure to build.

Release pressure carefully using the quick-release method according to manufacturer's instructions about 5 minutes. Unlock and remove the lid. Serve vegetables with rested brisket.