Idli Sambar

We usually know Idli n Sambar but what is "idli sambar". It is a special sambar made specially for idlis. Yes i learnt this recipe after I got married from my MIL.My hubby loves idlis. Give him in all three meals he will never say no. So I specially make this sambar when I make Idlis. This sambar is not that suitable for rice but goes perfect for idlis n tastes good with other tiffin items too.