Saute each of the ingredients except the seasonings, separately in little cooking oil till done. Remove, cool.
Then, using a mixer grind Red Chilies, Mustard, Methi to a smooth powder.
Add tamarind, run to a smooth paste. Finally, add the roasted curry leaves as well.
Heat cooking oil and season with seasoning, then finally add the paste to the pan. Saute over low flame for 10 mins.