Wash dal and rice throughly and soak for 4 to 5 hours.

Grind it into smooth batter with minmal water.

Keep it in warm place to ferment for 8 to 10 hours.

Before making idli cut carrot into flower shape.

Grease the idli stand with oil and put batter in it.

Put carrot flower and coriander leaves in batter.

Steam it for 10 min.

And designer idli ready to serve.