In the history of the Silk Road, Xinjiang at that time was an important transportation hub for domestic and foreign caravans and an important grain supply station. Because businessmen travel long distances, the food they carry must be preserved for a long time, easy to carry, and must be rich in various amino acids and trace elements necessary for the human body, such as vitamin C, otherwise people will die of scurvy like the sailors on Da Gama and Magellan's ocean fleet.

Of course, the ancients did not have such a scientific analysis at that time. They made long-distance food based on long-term accumulated experience and the principle of proceeding from reality.

The cut cake is made of corn and wheat flour, and a lot of dried fruits and preserved fruits are added in it. As we all know, corn flour and wheat flour are the staple foods in the north. At that time, most people who traveled to and from the Silk Road were northerners, so it was natural to cut cakes with flour.

Xinjiang has been rich in many kinds of fruits and dried fruits since ancient times, such as walnuts, peanuts, sunflower seeds and raisins. , extremely rich in nutrition. The ancients have understood their importance to human body in the process of long-term consumption, so it is not surprising to add them to the cut cakes made of flour. These are not enough. The cut cake must also meet the requirements of portability and preservation.

So when people cut the cake, they will add a lot of sugar to the flour. Someone asked, what's the use of adding sugar? Hum, sugar is of great use! First, it can flavor the cut cake. Secondly, a large amount of sugar with high saturation has a good antiseptic effect. And sucrose is also a very nutritious food, especially in the case of long-distance travel consuming a lot of energy, sugar can supplement physical strength very well and quickly!