Take a wide bowl and add the overrip banana and mash well.
To this, add besan, sugar, jeera, pepper powder, baking soda and salt.
Now, add curds and mix well using a spatula.
Slowly add wheat flour and mix using a spatula or knead till it forms a soft and smooth dough. You may not use all the flour or you may require extra depending on the banana you have used.
Add cooking oil all over the surface of the dough.
Keep it covered overnight or for 5 to 6 hours at room temperature.
For making rottis, heat a tawa. Divide the dough into equal balls.
Dust the ball with flour and roll using rolling pin to a thick roti (roundel). It should be the size of a puri but thicker. You can also shape them using your fingers if you can’t roll them.
Cook the roti over the hot tawa. Be careful to keep the tawa on medium flame, else the roti gets black spots.
When the surface forms bubbles, invert and cook. Press slightly so that it cooks well. You can drizzle cooking oil or ghee or apply butter while cooking on both surfaces but it can be had oil free too.
Remove and serve hot with Dalitoy or Chutney.