Place the cauliflower florets in a steamer basket. Set it inside the Instant Pot and pour in the water. Close the lid of the Instant Pot. Set the valve to sealing position.
Press the Pressure Cook or manual button and set the cook time to 2 minutes on high pressure. It will take about 5 minutes for the pot to come up to pressure. When the time is up, do a quick pressure release and carefully remove the steamer basket from the pot.
Notes
Use cold water
Cook for 1 minute for slightly crunchy cauliflower