1. The cake needs to be steamed for 30-50 minutes before it is cooked. Steamed cake is a famous snack in northern China in ancient times. It is made of eggs, flour and sugar. It is light yellow in color, spongy, elastic, sweet and soft, moist and delicious, with an eggy flavor.

2. Standards for steamed cakes: Shape: complete shape, consistent size, no overflowing edges. Color: light yellow. Tissue: spongy, elastic, no impurities. The steamed cake can be stored at room temperature for 35 days and needs to be stored in a cool and dry place.