* * Pay attention to the observation during cake baking. Usually Qifeng cake begins to swell after baking 15 minutes, and the surface is slightly yellow. It swells to the highest level in about 25 minutes (usually higher than the bending of the die), and the surface color is darker. After about 35 minutes, its surface will shrink to about flush with the mold, and its surface will be golden. If you are not sure whether it is baked or not, you can stick it on the bottom of the cake with a bamboo stick. If there is no cake mucus on the toothpick, it means it is baked.