Dosas are a South India fermented rice crepe. They have an airy texture that is not nearly as spongy as injera. The flavor of the dosa is fairly plain. It is the fair counterpoint to spicy fillings. While it can be eaten plain or with chutneys, when stuffed it is usually, perhaps always, filled with spicy potato filling (masala).
Potato Masala (for a baby)
Roast or microwave and then dice
½ small red onion, diced
¼ t cumin seeds
¼ t finely diced green chili