In a bowl add semolina, curd, saltand mix well.
If batter is too thick then add some water. Keep it aside for 20 minutes.
After 20 minutes heat a steamer.
Now grease a tin.
Add baking soda in batter and mix well.
Transfer it into tin and cook for 20 minutes.
After 20 minutes cut in to pieces.
Heat oil in a pan, and cracker mustard seeds and turmeric.
Saute the idli pieces in spices.
Serve hot with Coconut Chutney.