Add all of the ingredients, up to the black pepper, into the Instant Pot insert.
Cover your Instant Pot, set the vent to 'sealing’, select the soup button, select high pressure and set the timer to 12 mins (for peas with a little bite), or to 15 mins for softer peas.
When done, allow the Instant Pot to undergo natural pressure release for 5 mins.
Switch off and open the lid.
Stir and let it stand for a little while as the soup thickens.
