What are the leaves outside the zongzi? How is the shape of zongzi unified throughout the country?

The leaves of Zongzi are different from north to south, and most of them are local plants. The following is a detailed introduction of palm leaves. The leaves of jiaozi in old Beijing are generally reed leaves, which are called zongzi leaves when used in jiaozi. People in Guangzhou generally use bamboo leaves to wrap zongzi, and it is better to choose the one with smooth, soft and tough surface. Shantou people usually wrap zongzi with bamboo leaves. Zongzi has the fragrance of bamboo leaves, but it should be cooked until soft. In Shanghai and other places, the leaves collected from Huangshan Mountain in Anhui Province in dog days every year contain a special fragrance, commonly known as "Huizhou Fu Ruo". Generally speaking, the leaves most used for making zongzi in the south are Indocalamus leaves, also called palm leaves, which are leaves of Indocalamus plants, while in the north, there are more leaves of reeds. After reading the introduction of palm leaves, are you curious about why the leaves above are used to make zongzi? In fact, after understanding the requirements of Zongye, this question is very easy to answer. The leaves of zongzi should meet the following three characteristics: first, they have a clear fragrance; Second, they should not break after boiling in water; Third, they should have a large leaf area to make zongzi.

Zongzi can't be scattered immediately after being put into water, so stability becomes very important. As we know, triangle is a very stable shape, which is often used for reinforcement in life. The four outer surfaces of the tetrahedron are triangular, so the zongzi is not easy to deform and leak.

The simplicity of packaging is also a major feature of tetrahedral zongzi. Even if you haven't wrapped zongzi, people who have eaten zongzi can understand that the packaging of zongzi only depends on a long leaf without any modification or cutting. The strip-shaped zongzi leaves can directly form a tetrahedron after bending, and the binding rope outside can also be connected to a fixed one. Now there are some new shapes of zongzi on the market, such as long zongzi, which are usually stacked by multiple zongzi leaves, and there are many ropes outside to fix them, which is very troublesome.

Finally, tetrahedron can also make the most efficient use of space. Whether making zongzi at home or doing business, the number of zongzi is relatively large. If you want to make your own jiaozi in a cooker with limited space, rational use of space and effective stacking are the key. Obviously, tetrahedron meets this requirement, and its corners can occupy the space to the greatest extent, which increases the utilization rate of space.