Start by soaking the rice for 20 minutes in enough water to cover it.
Then drain the water and rinse the rice until the water runs clear.
Add the rice into your Instant Pot with the 2 cups of water.
Cook the rice for 2 minutes on high pressure in the Instant Pot with a natural release.
Once the Instant Pot is done releasing the steam, remove the lid, scoop out about ½ cup of rice and shape into a triangle with wet hands. If you have an onigiri mold, use that according to its directions.
Repeat shaping ½ cup portions into triangles, then sprinkle sea salt on both sides.
Place a nori strip under, on the side, and on top of the onigiri, as shown in the pictures, then enjoy!
Notes
Store in an airtight container in the fridge for up to 4 days. Reheat in the microwave, or for a different texture, reheat in the air fryer.