Remove the small outer leaves of the artichoke. Using a very sharp knife, cut off all but ¼-inch of the stem.Cut the top third (~1 inch) off of the artichoke to expose the inside.Rinse the artichokes well and pat them dry, then squeeze a lemon wedge on the cut surface of each of them to prevent them from browning.
Add the lemon wedges, water, garlic, salt, and herbs to the inner pot of the Instant Pot, then place the trivet/rack into the pot.
Place the artichokes on the trivet, cut side down. Close and seal the lid and cook on Manual High for approximately 20 minutes. If the artichokes are on the small side, reduce the time to 10 minutes. If they are on the large side, increase the time to 25 minutes.
Perform a Quick Release of the steam, remove the lid, and test the artichokes for doneness by sliding a paring knife into the bottom. If it slides in easily, they’re ready to enjoy!
Serve with melted butter, mayonnaise, ranch dressing, or your favorite aioli.