Pour in the extra 1/2 cup water, then add the spinach to the pot, piling it over the rice. Cover the pot again to allow the spinach to steam and wilt down for 2 minutes. Then, stir the spinach into the rice, so that it wilts down completely. (If you need to add a few splashes of additional water as you do this, go for it.) Finally, stir in the kidney beans, lemon and lime juice, and black pepper to your liking. Taste the rice, adjust seasonings as needed, then stir in the cilantro and green onion tops, if using. Serve drizzled with yum sauce
if you like.