Mix the sugar and salt into the glutinous rice flour.Do not add the hot water all at once; pour it in little by little while kneading to make ikbanjuk (hot water dough).
Tip: Adjust the water until you reach the desired texture. I used the full 100g / 3.5 oz. Dry glutinous rice flour requires more water.
Microwave at 800w for 2 minutes.Coat a wooden rolling pin and a bowl with cooking oil, and pound the rice cake with the wooden rolling pin.Microwave for an additional 30 seconds.
Microwaving in 30-second increments is recommended depending on how cooked your batch is.
Remove the rice cake from the microwave and knead/pound it well. The more you pound, the chewier it becomes.
Shape the rice cake into a rectangle.Sprinkle roasted konggaru on a cutting board and coat the rice cake evenly.