Mix rice flour, urad dal flour, plain flour, baking soda and salt.
Add oil and water gradually, kneading into a firm dough.
Divide the dough into large equal balls.
Boil the dough balls in water for 10–12 minutes; cool until safe to handle.
Break up the cooked dough, add cumin seeds and white pepper, then knead until smooth and workable.
Fill a chakli press and pipe small spirals using a star-shaped disc.
Preheat the air fryer to 150°C (300°F). Arrange spirals in a single layer.
Air fry for approximately 15–17 minutes at 150°C, spraying oil three times during cooking. Gently press the centre of a chakli to check the texture. If it still feels very soft, air fry for another 4–5 minutes and check again.
Cool completely before serving or storing.
Notes
Yield: approximately 6–8 crispy chaklis. No soaking or freezing. Air fry at 150°C for 15–17 minutes, spraying oil three times.