Instructions
Scald the flour
Put the bajra flour and salt in a wide steel bowl. Bring the water to a proper boil and pour about three quarters of it over the flour, stirring it through with the handle of a wooden spoon rather than your hand. Cover and leave 5 minutes.
This is the step that does the work. The hot water swells the starch, and that swollen starch is the only thing a gluten-free dough has to hold itself together with.
Knead it warm
As soon as you can bear the heat, knead firmly for 4 to 5 minutes, adding the remaining hot water a splash at a time, until the dough is smooth, soft and no longer sticky.
Knead it warm. Bajra dough stiffens as it cools, and a cold dough cracks the instant you try to shape it. Keep the ball under a damp cloth and work one rotla at a time.
Pat it between your palms
Take a lemon-sized ball, dust it in dry flour, and flatten it between your palms — turning and slapping it from one hand to the other so it spreads evenly. Work it out to about 12 cm across and a good 5 mm thick.
A rotla is meant to be thick. Thin is a different bread, and a thin one will not puff.
Onto a hot tawa
Lay the rotla on a hot tawa and cook about a minute, until the surface dulls and dries, then flip. Note the difference from a patted ragi rotti, which starts on a cold pan — this dough has already been part-cooked by the boiling water, so it lifts cleanly off a hot one.
Press, then puff
Cook the second side for a minute, pressing gently around the edges with a folded cloth so steam gathers inside instead of escaping at the rim. Then lift the rotla with tongs and hold it directly over an open flame for a few seconds a side until it balloons. On an electric hob, leave it on the tawa and keep up the steady pressing with the cloth instead.
Ghee it while it's hot
Smear generously with ghee while the rotla is still hot enough to drink it in, and serve at once — with lasan chutney, ringna no olo (roasted brinjal), kadhi, or the traditional lump of jaggery. Bajra rotla is at its best within minutes of the tawa.