Measure the rice flour in a medium-sized bowl, and add salt.
Bring water to a full boil in a kettle.
Start pouring the water from kettle to the flour mixture, and using a tall glass or steel cup mix the flour and water together. Make sure to add just enough water so that the desired texture is reached. You should be able to break the flour mixture apart into small crumbles.
Once all the flour mixture has been broken into small crumbles, set it aside and turn on a pressure cooker containing about 2 cups water.
Place a little bit of grated coconut at the bottom of a pittu mould and fill the rest of the mould with the flour mixture.
Place the pittu mould holding the flour mixture on the steaming pressure cooker.
Steam the pittu for about 3 – 5 minutes before removing from heat, and then place the next bit of flour mixture to steam. Continue working in this manner until all the flour mixture has been steamed.