Take a wok add 1 tsp oil.add mustard seeds till it splutter,now add gingergarlic,green chillies paste and curry leaves.
Now put this paste in mashed potatoes alongwith various spices and then add lemon juice and Coriander leaves.now make round balls of this material
Make a batter of gram flour by adding salt ,astoefida, pinch of baking sodaand water.the batter should not b too thick nor too thin otherwise adjust water level accordingly.
Now dip the balls prepared above intogram flour batter and deep fry it to make vadas.
For dry garlic chutney
Dry roast garlic , coconut,groundnut in a pan.
Now let them cool down
Now put all the ingredients in the mixer and make chutney.
Coriander chutney
Put coriander,green chilly,tamarind paste,lime juice,coconut in mixer and make chutney out of it.
Assembling
Now cut pav from center apply coriander chutney on 1 side and sweet tamarind chutney on another side and also apply garlic coconut chutney.