Rinse the rice thoroughly and cook it.

In a saucepan, combine the rice vinegar, sugar, and salt, and cook, stirring, until the sugar is dissolved.

Put the rice in a large bowl. Slowly pour the vinegar mixture over it while using a wooden spoon or paddle to fold or divide up the cooked rice to distribute the vinegar mixture throughout. You don't want the rice to get gummy or too sticky, so keep it moving, but be careful not to mash it. I enlist a child to stand there fanning it to dry it out as I incorporate the vinegar. Cover the rice until you're ready to use it.