Sieve besan and urad dal flour.
Make a well in the center, add turmeric powder, red chilli powder, salt, powdered sugar, citric acid +water, and oil. Mix well.
Mix all masala with flour.
Now adding water binds the dough like paratha dough. The dough will be sticky so you can grease your hands.
Cover and rest the dough for 15 minutes.
Now dissolve 1/4 tsp cooking soda with 1 tsp water and add to the bound dough.
Add little water in the dough and knead the dough till it slightly changes its color and becomes soft.
Heat oil in a pan. Now using a star mesh place it over the hot oil, and rub the dough over it.
Remove the mesh and fry the Tum Tum on low-medium flame. Remember the flame has to be low while you are using the mesh.
In case you do not have the big mesh, use the sev press machine with a Star mesh or champakali gathiya mesh or plastic bag and proceed in a similar manner.
Serve and store tam tam in an airtight container.