In a large mixing bowl combine flours with corn, Thai bird's eye green chilli, red chilli flakes, dill, onions, garam masala, salt, baking powder, baking soda, and turmeric. Mix to combine.
You will need approximately 1 cup of ice water. Start with 1/4 cup, and keep adding more to the mixture, gradually, till it transforms to a thick batter.
Heat three inches of oil in a heavy-bottomed pot on high heat, to 350F. Test the oil: a tiny drop of batter should sizzle.
Working in batches, carefully slide batter into the oil, tablespoon by tablespoon. Fry, agitating and turning the pakoras, for 1 1/2 to 2 minutes, until they turn golden-brown and are cooked through. Adjust heat up or down, as necessary, to maintain a temperature of 350-360F.
Remove cooked pakoras from the oil and transfer to a large platter lined with paper towels.