Rinse your rice in a fine mesh sieve, if desired. Transfer rice to a medium saucepan and add all ingredients except peas and cilantro.Bring to a boil, cover and lower to a simmer. Cook white rice for 18-20 minutes, brown rice for 45-50 minutes, or until all water has evaporated.Add frozen peas to rice and allow to sit, covered, for 10 minutes.Fluff rice with a fork and transfer to a serving bowl. Sprinkle with chopped cilantro, if desired.