First, If you are using frozen coconut, thaw them
Add coconut, Pottukadalai, green chilli, ginger, required salt and little water to a mixie jar; grind well
Furthermore, add water according to your prefered consistency and grind again
Add oil to a pan and heat
Furthermore add mustard seeds, urad dal, and curry leaves; splutter
Add asafoetida; mix well
Transfer to the chutney and serve