In a medium sauce pan, heat the water, black pepper and salt. When the liquid boils, stir in the rice.
Reduce heat to medium-low and simmer, covered, for about 25 minutes.
Do not boil away all of the liquid and do not stir the rice.
When a very small amount of liquid remains, remove the pan from the burner.
Add the butter and the chopped cilantro.
Stir and let the rice stand, covered, for 3 minutes before serving.
