Soak ½ cup white lentils for a few minutes. Now drain out the water and grind the soaked lentils.
Remove ground lentils mixture in a bowl. Add in ½ tsp cumin seeds, a little soda bi carb and water as required. Make into batter of medium consistency.
Heat oil in a wok, fry fritters with the lentils mixture.
In another bowl beat 250 gm yogurt with 3 tbsp sugar.
Soak fritter in water for a few minutes, then squeeze out extra water and add to the yogurt.
In a pan heat a little oil. Add in cumin seeds, salt, ½ tsp chaat masala and 1 tsp dry mango powder. Pour oil mixture on top of dahi baray.