firstly, in a large bowl take 2 tbsp besan and mix in 2 cup water.
whisk well making sure there are no lumps. keep aside.
now in a large kadai heat 3 tsp oil and splutter 1 tsp mustard, ½ tsp cumin, ½ tsp urad dal, ½ tsp chana dal, 1 dried red chilli, broken, few curry leaves and pinch hing.
further, add ½ onion and saute slightly.
also, add 1 inch ginger and 1 chilli. saute until onions shrink
additionally, add 1 tomato and saute until tomatoes turn soft and mushy.
keeping the flame on low, add ¼ tsp turmeric and ½ tsp salt. saute for a minute until the raw aroma disappears.
furthermore, add prepared besan mixture
keep stirring continuously, until the mixture combines well and thickens slightly.
now cover and cook for 10 minutes or until the raw aroma disappears
adjust consistency by adding water if required