Soak the urad dal in water for 4-5 hours. Drain the water completely.

Grind the soaked urad dal into a smooth, fluffy batter. Add minimal water if needed.

Add chopped ginger, green chilies, asafoetida, cumin seeds, curry leaves, and salt to the batter. Mix well.

Heat oil in a deep pan for frying. Wet your hands, take a small portion of the batter, and shape it into a donut with a hole in the center.

Gently slide the shaped vada into the hot oil. Fry on medium heat until golden brown and crispy.

Remove the vadas from the oil and drain on paper towels. Serve hot with coconut chutney or sambar.