Steamed cakes should be steamed 15 to 20 minutes. Hair cake is a kind of fermented pasta, which is made of flour. Because flour is mainly amylose with high water absorption, it is relatively loose after fermentation, so it is easier to steam, 15 to 20 minutes. Ordinary hair cakes are generally made of flour and corn starch. Although pure flour can also be used to make hair cakes, in terms of taste, hair cakes made of pure flour are not as fluffy as flour and corn starch, and there are also hair cakes with glutinous rice flour inside. The taste of glutinous rice flour is not as fluffy and delicious as corn starch, but it is also more delicious than pure flour cake. Low-gluten flour can also be used to make hair cakes. If there is no low-gluten flour, ordinary medium-gluten flour is ok, but high-gluten flour is not suitable. Low gluten flour has weak gluten, white color, low protein content and low wheat bran content, and is easy to make meatballs by hand. The cake made of low-gluten flour has a soft and fluffy taste and is suitable for people with bad teeth; The protein content of common flour is about 8% to 10.5%, which is the most widely used flour, and most pasta can be made with it. The cakes made of ordinary flour are wetter and more waxy. High gluten flour has high protein content and strong gluten, so it is not suitable for making hair cakes.