Make the rice: Pour 1¾ cups cold water into a small pot. Add the salt and rice and bring to a boil. Boil for 1 minute and then cover the pot tightly and reduce the heat to low. Cook for 15 to 17 minutes, until all the liquid has been absorbed. Turn off the heat, add the vinegar, and fluff the rice with a fork, then cover the rice and steam for 3 minutes. Set aside.