Rinse the sushi rice in a fine mesh colander under cold water until the water runs clear, about 2-3 Minutes. Alternatively, fill a medium sized mixing bowl with cold water. Add sushi rice, swirl, strain out the water and repeat the process at least four times.
Add rinsed, dry sushi rice to your Instant Pot along with 2 1/4 cups of cold water. Stir to combine.
Pressure cook the rice on Low for 10 Minutes.
Once cooking time is over, allow the Instant Pot to naturally release for 5 Minutes on the keep warm setting. After 5 Minutes, flip the valve to release any residual steam.
While the rice is cooking, prepare the seasoning. In a small mixing bowl, combine 4 tbsp rice vinegar, 2 tbsp white sugar, and 1 tsp salt. Mix to dissolve.
Pour seasoning mixture over the cooked sushi rice, gently folding and fluffing the rice.
Allow rice to cool on a plate before forming for sushi, or keep warm in the Instant Pot until ready for use.