Ragi flour, which is usually used to make this roti known as mandua in the language of Uttarakhand is made from finger millet. American millet flour is made from pearl millet, known as Bajra in Indian markets. I used this bajra flour to make these.
Due to the nature of millet flour, the dough will have a texture similar to clay.
As you are rolling the dough, if it breaks, simply press the dough together and dust flour on top. Continue to roll.
Make sure the board, your rolling pin and the top of the roti is well floured when rolling