Add all the ingredients to a big bowl. Rub all the ingredients together and mix well.
Now, add water little by little and knead till you get a smooth dough.
Divide the prepared dough into equal portions and roll into smooth balls.
Apply oil to a plastic sheet, grease your fingers with oil and flatten each ball using your palms to a disc, 2-3" in diameter.
In the mean time, heat oil over medium heat in a deep pan or kadai.
One oil is hot enough, gently slide each thattai and deep fry in batches. You can fry 5-6 in each batch depending on the size of your pan.
Once done, drain them onto an absorbent paper napkin and let them cool to room temperature.
Repeat the process till you are done with the dough.
Cool them and store them in an airtight container.