The hardness of glutinous rice cake has nothing to do with the amount of sugar, but may be related to the amount of water added and the cooking time.

When kneading rice noodles, be careful not to add too much water. If it is particularly dry, you can add a little water and water. When kneading dough, the dough without rice is sticky, so it is very important to spread glutinous rice flour as dry flour on the chopping board and knead it to make cookies.