How to make Dosa at home

Dosa is a South Indian crepe made from rice and lentils. It is rich in carbohydrates and protein and is usually prepared for breakfast or dinner. It is served with sambhar or chutney. Dosa is a favourite among kids. If I ask my kids whether they want idly or dosa, their choice is always dosa. There are a number of varieties of dosa but before going to all that I wanted to give the basic dosa