What I want to talk about here is called sesame seed cake, also called white flour cake, that is, only the old flour is fermented, and the food additive is only soda ash.
The general steps are as follows.
1 dough. First, melt the old noodles with water (the water temperature changes with the seasons, which is close to the body temperature in spring and autumn, lower than the body temperature in summer, and the water temperature in winter is about 50 degrees), pour about 2 kilograms of flour into the basin, then stir it into a flocculent shape with chopsticks, and then slowly close it by hand.
2 hair noodles. Cover the kneaded dough with plastic wrap or wet towel. Put it in a place with temperature (except in summer) (such as stove, heating, etc.).
3 wake up. Noodles will naturally wake up at a certain temperature and room temperature, which usually takes about 8 hours, but it will be different due to the influence of temperature, up to 5 hours in summer and about 12 hours in winter. The volume of dough has expanded more than twice as much as before. When you tear the dough by hand, you will see obvious honeycomb, that is, the hair is good.
4 to alkali. Old dough will produce a lot of lactic acid bacteria, which must be neutralized by adding soda water. Generally, 50-55g of soda is added to dough in summer 10 kg, 40-45g in spring and autumn, and 30-35g in winter, and soda water must be melted with warm water.
5 knead noodles. Only a little dry flour is allowed to be mixed into the cake surface, not too soft, and it is advisable not to touch your hands. After repeated extrusion and kneading, the surface is smooth, hand-polished and basin-polished, and the surface is kneaded. (Turn on the electric cake gear switch at this time).
6 make a blank. Push the kneaded dough away with a dough stick, so that the thickness is basically uniform, and use a mold to cover the dough with plastic paper or white cloth, and it will automatically wake up in about 10 minutes.
7 on the pot. When the temperature of the electric cake stall is up and down (generally, the upper temperature is 160 degrees, and the lower temperature is 140 degrees), the cake blank can only be put in when the two red indicator lights are all on, and the lid is covered, and the cake will be cooked in 15 minutes at most. Be careful not to uncover the lid or turn over the cake during the period. Just do it once. In this way, the cake is yellow and soft, not brittle and hard, and even if it is cold, it tastes crisp and fragrant.