Rinse the rice. Read the packaging, as some rice does not need washing and is enriched with iron, niacin, thiamin, and folic acid; rinsing may be unnecessary and will remove any water-soluble vitamins and minerals in the rice.[3] Unless the packaging insists that the rice does not need rinsing, however, it is safer and more hygienic to rinse it to remove any pesticides, herbicides, or contaminants that may be present.