Clean and rinse the rice and sprouted mung beans; you can rinse together. Set aside
Clean and peel (if you desire) and chop the potato; chop the tomato. Set aside.
Make the Khitchri
In a pressure cooker, add the ghee, cumin seeds, hing, chopped green chili and grated ginger. Cook and stir a few minutes.
Add the chopped potatoes and chopped tomato. Stir and cook for several minutes.
Add the turmeric, salt and pepper. Continue stirring and cooking to mix well.
Add the rinsed rice and mung beans, stir to mix well. Add the 3 cups of water, cover and cook over medium heat for 2 whistles; turn down heat to low and cook for 4 more whistles. Remove from heat and allow to cool naturally.
When pressure is naturally released, open the lid and stir in the butter (or ghee), fresh spinach, cilantro and lemon juice. You can serve with an other dollop of butter on top of each bowl. A complete meal unto itself.