Lentil and Rice Flat Bread

Recently I visited a friend who treated me to what she called dosas, which are South Indian lentil and rice flat breads - basically, savory pancakes or crepes. I had been telling her about reading Wild Fermentation, making my own yogurt and trying to decide what fermented food to try next. She jumped up and insisted that I try her dosas, which are a fermented food and very easy to make. She