Bring 3 cups water to a boil. Add kosher salt to taste and 1 cup farro all at once. Bring the water back to a boil, then reduce to a simmer, cover and cook for about 20 minutes.
After 20 minutes check the farro. The grains should be separate, somewhat chewy and there should be water remaining. If the grains are done to your liking, strain the farro and allow to cool. Then use in salads or as a side dish.