As the water boils, add the carom seeds, green chillies, turmeric and red chili powders. Add the grains and beans. Mix well.
Cover and cook on a low flame, for 30 minutes till tender. If water remains, simmer for other 4-8 minutes. Switch off the flame. Remove from the gas.
Add 2 tablespoons of ghee. Gently mix well. Garnish, serve hot with kadhi or curds, pickles and papad.
Additional Note
To Pressure Cook Khichdi:
After tempering, add the other ingredients.
Add only 4 1/2 cups of water.
Pressure cook khichdi up to 4 whistles.
Consistency of khichdi depends on individual liking.