At first, preparing green chutney for dahi vada in a blender pour fresh coriander leaves, pudina leaves, chopped onions, green chili, and a tbsp of chopped ginger-garlic.

Additionally add some spices including a tsp of cumin seed, amchur powder(dry mango powder), a pinch of salt, and a dash of water.

Now, blend it and make smooth green chutney.

If chutney becomes very thick you can add a little water and set it aside for later usage.

Next for preparing sweet and sour tamarind chutney in a bowl we add tamarind and pour some warm water.

Then squeeze each tamarind and deseeded them and pass it through a sieve and make it a smooth mixture.

Now, in a pan pour water tamarind mixture, jaggery, red chili powder, coriander powder, cumin powder, and salt to taste.

After that let them simmer until it becomes slightly thick, also check the test of sweetness if needed add more jaggery.

Then transfer this sweet and sour tamarind chutney to a container for later use.

Now for preparing soft dahi vada, soak urad dal in the water for at least 8 to 10 hours.

After that, pour soaked urad dal, dash of water in a blender, and make a soft fluffy batter.

Now transfer the batter to a bowl.

Add a dash of water, a teaspoon of cumin seed, salt, chopped ginger, and green chili.

Next continuously beat it in one direction until air goes inside the batter and becomes more fluffy and light.

Now for the frying batter, pour oil into a Kadai and heat it on medium flame.

Then gently pour 3 tbsp of batter in hot oil and fry them in medium flame until it becomes crisp and slightly golden brown from both sides.

Now take them out from the pan and place them on kitchen tissue to drain excess oil from it.

After that transfer the vada into cold water for at least 20 to 25 min.

Finally for assembling dahi vada recipe in a bowl pour yogurt, add a few tablespoons of sugar, a pinch of salt, and beat everything until yogurt becomes smooth.

Furthermore pick vada one by one gently squeeze them in between palms to drain excess water from them, place them on the serving plate.

Now, pour beat dahi over each vada. 

Then, add tamarind chutney, green chutney and sprinkle some roasted cumin powder, red chili powder, chat masala powder, black salt over it.