Sift 500 g None (rice flour) and 0.3 g salt into a wide bowl, then mix in 500 ml warm water until a smooth dough forms.
Turn the dough out onto a lightly floured counter and knead for 2 minutes, then divide into 10 to 12 equal portions and roll them into balls.
Dust a work surface with extra flour, flatten each ball gently with your palms into a round disc, then rotate and press between your hands to thin out into a flatbread.
Heat a tawa or heavy-based frying pan over high heat, then adjust the flame down to medium.
Flick a little water over the surface of a flattened dough disc, stretch it slightly, and place it into the hot pan.
Cook for 15 seconds, flip over, and cook the second side for another 15 seconds.
Move the bread directly onto an open gas flame, or continue cooking in the dry pan, until small charred black specks appear on both sides; repeat the process for all remaining portions.