Peel and clean the yam and dice into small pieces then heat a pressure cooker and saute fennel seeds for few secs then tip in chilli powder,coriander powder,turmeric powder,asafoetida powder and saute for few secs be careful not to burn it later add the diced yam,add sufficient water and salt,close the lid of the pressure cooker and pressure cook till done,it took 3 whistles.

Into the chopper add onions,ginger,garlic and 5-6curry leaves and mince it to fine pieces.

Heat ghee in a pan tip in cinnamon,star anise and saute till it's aromatic then add all the finely chopped ingredients and saute till onions are translucent then mash the pressure cooked yam and add along with the gravy and cook till the gravy thickens.Once done tear some curry leaves and mix nicely.Swicth off the flame and serve hot with roti or white rice.