1 onion - thinly sliced
1 medium sized potato - thinly sliced
3 Tbsp besan
1 Tbsp rice flour
1 tsp cumin seeds
1/4 tsp turmeric powder
1/2-1 tsp red chilli powder
Baking soda (optional)
Oil for deep frying
1) Mix all the ingredients except oil. Consistency should be like thick yoghurt.
2) Heat oil for deep frying on a high. When it is hot enough, dip about 8-10 onion slices in the batter and carefully put it into the pan. Depending on the size of the pan, add a few more. Deep fry until it turns golden brown. Remove and place it on a plate lined with paper towel to soak excess oil.
3) Similarly, for potato - dip individual slices in the batter and deep fry.