Soak urad dal in plenty of water for at least 4 hours. Grind the soaked dal with LITTLE OR NO water. Add cumin seeds, green chilies and salt and set aside.

Heat oil for deep frying. To make the vadas, take about 2-3 tbsp of batter on a ziploc bag or aluminum foil, flatten it and poke a hole in the middle. Slowly transfer it into the hot oil and fry on medium-high flame until golden brown and cooked through.

Serve immediately with ginger chutney or sambar or coconut chutney or anything else.