In a wide vessel take the flours and add the salt, sugar, baking soda and oil. Mix well till it ressembles bread crumbs
Next add the curd, and mix that also very well. Add water as needed to make a sticky dough. I needed 3/4 cup of water.
Once the all the flour has been mixed well add the semolina and knead for at least 5-7 minutes. You can use your stand mixer also for this.
When the dough becomes soft apply a layer of oil all over and let it sit for 3-4 hours, to ferment.
After 3 hours, knead the dough for a few minutes, divide into balls as per your desired size. Roll out evenly and deep fry in oil until golden brown.