Authentic Guokui is made of yeast dough.

The most important thing in making Guokui is to mix the dough and slowly knead it, so that the dough is fully kneaded so that the resulting cake will taste good when chewed. Guokui looks hard and tastes very tough. Most people think it is made of "dead noodles", but it is not. When making dough, you need to use fermented noodles with flour, otherwise the dough will taste like stones.

But this dough does not use baking powder, it is homemade leaven!