Use roasted rice flour for puttu. If you can't find roasted rice flour, buy plain rice flour and dry roast it over a low heat in a non-stick pan or a well-seasoned wok or kadai.
Put the roasted rice flour and salt in a mixing bowl.
Sprinkle in the water a little at a time and mix well.
The mix should look like grated coconut or breadcrumbs. Do not add too much water or it will become sticky. The consistency is right when you compress a fistful of the mixture in your palm and it retains its shape, similar to a crumble base or pie dough pastry.
Let it rest for 30-60 mins.
Once rested, if it is too dry, sprinkle on a little more water.
Bring water to a boil in a puttu steamer. Fit the perforated disc correctly on the bottom of the puttu maker.
Grease the puttu maker with coconut oil or ghee and start filling it with the flour mixture followed by a layer of grated coconut alternately until you fill the puttu maker all the way to the top.
Now place it over the base of the puttu steamer and cook for 5-7 mins over a low heat.
Turn off the heat and let it rest for 2-3 mins, then, using a wooden spoon, gently push the puttu so it comes out clean.
Serve hot with kadala curry.