Place the rice in a large bowl and cover with cold water. Swirl the rice a few times, then pour off the water. Keep doing this, using several changes of water, until the water runs clear.
Drain the rice well and transfer it to a pot or to a rice cooker. Add 2 cups of water. If using a rice cooker, lock the lid and cook according to the manufacturer’s instructions. If using a pot, bring the water to a boil, uncovered. Once boiling, reduce the heat to low and cover. Cook 15-20 minutes, or until the water is absorbed. Remove the pot from the heat and let sit, covered, 10 minutes to steam.
In the meantime, combine the vinegar, sugar and salt in a small saucepan. Bring to a boil and cook until the sugar and salt are dissolved.
Transfer the cooked rice to a large bowl. Drizzle the vinegar mixture over top. Using a rubber spatula or wooden paddle, fold and turn the rice until each grain is coated. Let cool.