Boil the corn in two cups of water with lemon juice till tender. Drain and keep aside. Heat ghee in a degchi. Add cumin seeds. Once they start to change colour, add asafoetida and ginger, green chillies and turmeric powder.
Mix well and cook for two and three minutes. Add cooked corn and three and a half cups of water and bring to a boil. Add rice and salt, mix and cook on low heat till the rice is cooked and the khichdi is of the right consistency.
Garnish with fresh coriander and serve hot with yogurt, papad and pickle of your choice.