My achi makes this dish from the bone pieces and chicken organs and we would drink it like a soup or have it with rice or roti. It is great for digestion and relieves you of cold. It involves no additional use of oil for cooking, the soup gets its oily texture from the chicken fat. If boneless, skinless chicken breasts are used, then it is a completely healthy soup.
In a mixer grinder or a smoothie blender, grind the onions, green chillies, ginger, garlic, cumin seeds, coriander seeds and pepper corns to a fine paste.
Heat the cooking pan to smoking hotness. Add the mustard seeds and let it pop. Then add the above made onion paste. Cook till the oil separates. Add the tomatoes, turmeric powder, chilli powder and cook till the raw smell disappears.
Add the chicken and saute for 5-10minutes. Add water and curry leaves. Cook for 8-10 whistles. The chicken should be really soft and tender. Add salt to taste. Garnish with fresh cilantro. Serve hot.