Add ghee in a hot pan and add jeera powder. Once they crackle add grated ginger and hing and then turn off the heat.
Take a pan, add curd and 2 cups of water, and then beat curd or churn it properly to ensure that there are no lumps to the mixture.
Keep the curd mixture on the stove and heat it on a medium flame for 3-4 minutes while stirring it continuously.
Meanwhile, take a bowl, add millet flour of your choice, salt, chilli powder and 4-5 tbsp of water, and mix it properly to ensure there are no lumps formed in the mixture. Add millet mixture to the pan and start stirring.
Add tadka and keep stirring till the khichu reaches desired consistency. This should take about 5 minutes. You need to ensure that the ragi flour gets cooked properly.
Add coriander, mix it well, and then turn off the heat