Using a sieve, sift both flours, baking soda, turmeric powder and salt in a large mixing bowl. Mix well.
Using lukewarm water, slowly add in to the mixing bowl. Mix well.
Knead dough until it is stiff.
Using a muslin cloth or napkin, cover the dough for at least 10 minutes.
Divide dough into small pieces.
Take the dough, add a drop of oil, and use a pestle to pound into the dough. Fold dough and repeat process until dough turns smooth. It should take 8-10 minutes.
Take a small piece of dough, grease with a little oil and make into a round shape. Make sure to keep all the remaining dough covered so it does not get dry.
Using a rolling pin, roll out the dough to a thin circle. Lay each piece on a clean cloth sheet. Repeat process until all are done.
Using a pizza cutter, cut into wide strips. Place all strips on a tray.
Using a deep pan, heat oil on medium heat for deep frying.
Once oil is ready, take a few strips and fry until it is light brown, cripsy and puffed.
Then place them on tray lined with paper napkin. It will help absorb excess oil.
Mix red chili powder, black salt and chaat masala. Sprinkle on top of each fafda.
Store them in an air tight container.