Cut stem off and trim about 1 inch off the tip of the artichokes with kitchen shears.
Place 1 cup of cold water and a steamer rack in the Instant Pot pressure cooker. Place 2 whole artichokes on the steamer rack, and close the lid.
Pressure cook on High Pressure for 8 minutes (using the Manual Button/Pressure Cook + Quick Release).
While the artichokes are cooking, whisk Aioli ingredients together.
Serve artichokes with aioli.