Rinse the yellow split peas/chana dal thoroughly and soak it in water for about 2-3 hours. Drain the water completely.
Keep aside 3 tablespoons of dal and add the rest in a blender or food processor, coarsely grind the soaked chana dal without adding any water. The texture should be coarse, not smooth.
Finally, add reserved 3 tablespoons of dal and pulse them once.
Transfer the ground dal to a mixing bowl. Add chopped green chillies, onion, coriander leaves, curry leaves, ginger, cumin seeds, and salt to taste.
Mix all the ingredients well to form a thick batter. If the mixture is too dry, sprinkle a little water, but make sure it doesn't become watery.
Heat oil in a deep frying pan or kadhai over medium heat.
Take a small portion of the batter in your hand and shape it into a small disc or ball. Flatten it slightly.
Gently slide the shaped vadas into the hot oil, frying them in batches, making sure not to overcrowd the pan.
Fry the vadas until they turn golden brown and crispy on all sides, flipping them occasionally for even cooking.
Once done, remove the vadas from the oil using a slotted spoon and drain the excess oil on paper towels.
Serve the hot and crispy Paruppu vadas with coconut or tomato chutney for a delicious snack or appetizer.
Enjoy your homemade Paruppu Vadas!