In a wide bowl take the rice flour, rava, maida, salt, cumin and white sesame seeds. Give a quick mix.
In a mixer add desiccated coconut, red chillies, curry leaves and asafoetida. Grind them together to coarse powder.
Include drained lentils and ground red chilly masala from above step. Mix well.
Add 1/4 cup hot oil to the bowl and combine it so that flour crumbles. Next adding water little by little, make stiff dough. Taking a big lump of dough and roll it over as thin circle and using any lid mark circles over dough.
Heat oil in a heavy bottom wok, when it heats up drop the nippattu in it. Fry till they are crisp and drain over the tissue. Repeat this for all the rolled nippattu.
Crispy nippattu is ready to serve as tea time snack.