- Wash and peel the ginger to remove all its skin. Cut it very nicely, or easier process it with the chillies in a food processor till nicely minced. 
- In a bowl, add jaggery, tamarind and one cup of water. Bring to boil till the jaggery is melted. Set aside. 
- In a sauce pan, heat the oil. Splutter the mustard seeds. Fry the curry leaves and the chilli flakes. 
- Add the minced ginger-chilli mixture and saute for five minutes or till the raw smell is gone.  
- Strain the jaggery tamarind water into the ginger mixture. Add another 1/4 cup and squeeze out the tamarind completely, pour the water. 
- Adjust the seasoning and simmer the mixture, stirring occasionally to avoid the mixture from sticking to the pan. 
- After some time, you will see the mixture getting syrupy. Cook till the mixture is nicely thick with little liquid and tastes done. Adjust salt and switch off. 
- Cool completely before storing into a clean glass jar. Use within a month and only use a dry spoon to serve.