The method of wine-making has existed since ancient times, and the earliest ancient liquor in the existing age was unearthed from the tomb of the Shang Dynasty, although after more than 3,000 years of hydrolysis, alcoholization and ammonolysis and a series of chemical changes, the strong aroma of the ancient wine has not volatilized and dried.

In the spring and autumn period, Zhongshan country is the Lingshou area of Hebei Province, which is the best at making wine, and after its wine is brewed, it is immediately poured into the big poppy, soaked in the stems and leaves of nine kinds of flowers, and stored for more than 10 years before drinking.

Cao Cao, the hero of the country, has two famous poems: "When you sing about wine, life is geometric." "The only way to solve the worries is Du Kang." Cao Cao is not only a master drinker, but also proficient in winemaking techniques.

He once presented a set of "Nine Brewing Methods" to Emperor Xian of the Han Dynasty, which is roughly similar to the modern continuous feeding method of brewing: that is, in the fermented grain, raw materials are continuously inputted, and the sugar in the fermented grain is supplemented by Rhizopus saccharification, so that the yeast can always ferment in the appropriate sugar content, and the wine produced is mellow and delicious, refreshing and intoxicating.

As early as the Northern Wei Dynasty, Jia Sixian's "Qi Min Yaoshu" contained a discussion on koji-making and wine-making, which was a summary of the technology and experience of koji-making and wine-making at that time.

The book describes the preparation methods of 12 different types of koji and more than 20 types of sake, and proposes the concept of koji and "five-colored clothing" and recognizes the correlation between the two. "Five-color coating" refers to a mixture of mycelium and conidia of mold in koji, which is black, white, yellow-green, and other colors.

This is also when Liu Feng decided to build a brewing workshop in Qizhou, which did not arouse the opposition of everyone under his command, and even the sergeants under his command strongly agreed.

During the construction of the winery, Liu Feng led the recruited brewing masters to enter the preparation work, and the brewing process was basically divided into two steps, that is, koji making and winemaking.

Koji is an indispensable existence in the process of winemaking, and the microorganisms and molds that grow in koji are the main reasons, the so-called "koji is the mother of wine", and the quality of koji is a key position in the quality and yield of sorghum wine. It is no exaggeration to say that the invention of koji is comparable to the four major inventions.

The carefully screened wheat is finely ground into powder, and then stirred and pressed into a square koji block, the next step is the important step, fermentation and culture, after the completion of the culture, it will be stored in the shade, the dry koji block is earthy yellow, must be ground into koji powder, can be mixed into sorghum rice to make wine, so far the koji making work is completed.

The quality of the koji is closely related to the temperature control during the koji making period, and the temperature control is done by using natural air, so air has become the biggest resource and key to cultivating the koji.

This is the role of Liu Feng, he does not know the process of all manufacturing processes, but in the key places of the process, to carry out innovation, is to greatly promote the development of its production.

For the control of temperature, the difficulty lies in the constant temperature adjustment, Liu Feng and the middle and senior craftsmen of the craftsman camp, conducted an in-depth discussion, and found that there are many local methods to control the temperature, curved air swirl circulation and so on.

With the reward of silver money and the guidance of concepts, these senior craftsmen lived up to Liu Feng's expectations, and after the completion of the construction of the distillery, they also solved the problem of temperature control of koji.

The newly built brewing workshop has three grand buildings, except for the place where the koji is made, which is quite special, and the other two are rectangular halls, where the work of soaking, cooking, cooling, mixing, mixing, fermentation, distillation, etc., is carried out in turn according to the assembly line.

After soaking the sorghum rice for 12 hours, it is steamed in a boiler, commonly known as "steamed sorghum rice", referred to as "steamed rice", after steaming, it is sent to the rice cooler with a conveyor belt, and the chaff is added on the way to make the sorghum rice not too viscous and accelerate the cooling.

The cooled sorghum rice mixed with chaff is sent to the koji mixer, granular koji powder is added, and the sorghum rice and koji powder are evenly mixed with the koji powder with the koji mixer, poured into the fermentation tank, and after fermentation for ten days, the liquor is distilled.

The distilled liquor is divided into two courses, the first liquor must be blended to improve the taste and flavor because of the strong sorghum flavor, and the sorghum dregs after the first liquor distillation are cooled by adding chaff out of the pot and then adding koji powder to mix evenly, and then sent to the fermentation pond for re-fermentation for more than ten days, and then distilled to obtain the second liquor.

As the saying goes, there must be famous springs in the production area of famous wine, but water quality plays a crucial role in the quality of wine, and although there are many springs in Qizhou, the water quality is not the best, Liu Feng can only find a way in the output and brewing industry.

The construction of the entire distillery has thoroughly tested the current industrial level of Yucheng, so that after it was put into production, the craftsmen are still making various improvements, in order to control the temperature of the qu pond, the entire fermentation tank has evolved into a fermentation tower.

The distillation machine has also been changed to become a spiral steel tube distillation machine that has been welded several times, which truly reflects the great progress of the technical level of smelting in Wu'an Smelter.

During the construction of the winery, in order to stabilize the hearts of the people in Qizhou, Liu Feng had to announce that Qizhou would not be levied mu property tax that year, and after Liu Feng transferred the tax, Fanyang Mansion only collected two kinds of taxes: mu property tax and commercial tax.

In this way, it not only cut off the possibility of those small officials who have not been rectified, but also let some slightly wealthier households not move out of Qizhou.

The villagers of Qizhou have received great benefits, but the officials of Qizhou all hate Liu Feng and Deng Jieyu, and cut off people's financial routes, such as killing their parents, but fortunately, Liu Feng transferred money and grain from Yucheng, and the monthly rations of Qizhou officials were still distributed as usual, which slightly calmed people's hearts.

Ten months later, the winery can be officially put into production, and at this time Liu Feng also posted an announcement to recruit winemakers, and the announcement that the villagers of Qizhou will cooperate to build a workshop, a few days, the news of Qizhou spread in the land of Qilu.

Coupled with the previous tax exemption announcement, the hearts of the people of Qizhou were completely attached to Fanyang Mansion, and those families who were still seeking vitality in Qizhou also took the olive branch thrown by Liu Feng and threw themselves into the arms of Fanyang Mansion.

In Qilu is still in shock, Qizhou has entered a high-speed operation, those confiscated fields are registered and registered, and then distributed to the villagers, and the fields that will be opened up everywhere have also been carefully planned.

Those families who chose to cooperate with Fanyang Mansion, some invested their money in the agricultural fort that was opened with Fanyang Mansion, and some invested in the workshop, and the changes in Qizhou were like this June day, changing so fast that they were somewhat shocking.

The changes in Qizhou also attracted villagers from Zizhou, Yizhou, Binzhou and other places, those villagers who had no land to cultivate and no work to do, have thrown themselves to Qizhou, and at the same time, the merchant ships along the canal to the north also brought a large number of craftsmen, these are craftsmen who could not live in the Southern Tang Dynasty and other places.

But they are all invested in Qizhou, where they ushered in the spring, in addition to the bounty a month ago, even skilled craftsmen, will distribute houses, the most important thing is that the entire Fanyang Mansion system, whether it is a military general or a priest, is quite respectful of craftsmen, especially those senior craftsmen, but also to the guests.

How did this not make them happy, so that they had great enthusiasm for work, and Qizhou began to develop in this hot atmosphere.