Sambar is served with idli, dosa, steamed rice, vada, uttapam. These are the best dishes you can have with it. Other than that you can have it with chapati or roti. It tastes good with roti also. Just make a little thick consistency of it. Read the complete recipe of masala dosa and plain dosa. I have posted idli recipe on my youtube channel. Nariyal ki chutney is served with the dosa and idli.