Cut the left over idlies as small pieces as any shape as ur desired..keep aside..dry roast the curry leaves, keep aside..dry roast the peppercorns, red chillies, cumin seeds n urad dal, grind them slightly coarse with dry roasted curry leaves, keep aside this grounded powder, (dont add water)..heat oil in a kadai..add the urad dal n mustard seeds n let them splutters, add the idli pieces n toss them gentlely for a while, once they absorb the oil, add the grounded curry leaves powder as per need n stir them well until they gets well mixed, can store the rest curry leaves powder in a air tight box n can use them very well whenever u need to prepare this curry leaves idli..can keep them for a month...

Easy as well as healthy n tasty idlies r ready to serve...