Make the mixture of curd and suji and add 1-2 teaspoon water to it

And then with this mixture make idli in oven or steamer for 10 minutes

Boil potato.

Then take pan and add oil and then add potato and other vegetables of your choice and spices and mix well, cook it for 5-7 minutes

Cut the idli from the centre

Then add the filling of vegetable in it

Now take pan and add oil and keep the idli sandwich on it so that it became crispy