Darin the water from the soaked dal and add it to a mixer jar. Grind it to a smooth paste by adding as little water as possible. This may take about 4-5 iterations, but the lentils will eventually come together to form a smooth paste
Empty this in a mixing bowl, add a teaspoon of salt and whisk it using your fingers, until it forms a light, airy batter. To check if it is so, once you finish whisking drop a dollop of the batter in a glass of water. If it floats and comes on top, you have got it right
Before you begin cooking the vadas, mix the asafetida in 2 cups of lukewarm water and set it aside
Grease your appe /aebleskiver pan and drop in two tablespoons of the dahi vada batter in each groove and cook them over medium high heat
Once you see the under surface of each fritter dried and bubbles appear on the top, flip each of them and cook until golden brown on both sides. Remove and drop them in the asafetida infused water
To the yoghurt as the salt and the sugar and whisk well, until there lump free. Keep it to chill in the refrigerator
To make the green, spicy chutney, grind all its ingredients to a smooth paste. Remove and set it aside
To make the sweet and tangy chutney, set a sauce pan with all ingredients under "sweet" chutney to cook over medium flame
Once the jaggery melts and the syrup thickens, remove from flame. Let this cool down then blend it to a smooth paste
To assemble the dahi vadas, in your serving dish place 2-3 tbsp of the seasoned yoghurt. Remove the vadas soaking in the water, squeeze them between your palms to remove the water, cracking them slightly and then place them on the bed of yoghurt. Top them with some ore yoghurt and the chutneys*
Sprinkle over some chaat masala, red chilli powder, pink salt, roasted cumin powder and coriander leaves. Refrigerate for 10-15 minutes or serve your delicious appe pan dahi vadas right away and enjoy!