Add besan, rice flour, 1/4 tsp turmeric powder and salt in a bowl. Add water little by little and make a smooth batter. add 1 tsp hot oil in the end and mix well.
In another bowl, add chaat masala, salt, 1/4 tsp turmeric powder, asafoetida, red chilli powder, jaggery, salt to taste and mix it well to make a mixture of spices and keep it aside.