The next day, add ¾ to 1 cup (180-240ml) of cold water to the dough. The consistency of the dough must be a little thicker than a pancake batter. Mix well with a stand mixer or food processor so that the dough increases in volume. Let stand for 15 minutes.
Cook rice with ½ cup (130ml) of water over medium heat for 15 minutes. Make a porridge by mixing the cooked rice.
Add about ¾ cup (180ml) of water and mix to obtain a fairly liquid mixture.