Glycerin, scientific name glycerol, is an extremely important chemical raw material, with a wide range of uses covering almost most chemical fields.

Including food processing, pharmaceutical, cosmetics manufacturing, industrial machinery lubrication, organic synthesis and so on.

It also has an important use, that is, it is used to make nitroglycerin ......, this thing is too powerful, and Wei Chen does not dare to touch it for the time being.

Glycerin has a wide range of applications, and the most practical and profitable method that Weichen can think of is to use it as a food additive, to be precise, a fruit wine additive.

Since the founding of the Great Zhou Dynasty, in order to make up for the lack of national use, the old rules of the previous dynasty have been followed, and all kinds of wineries have been incorporated into the official camp, either directly as official brews, or contracted out, and open bidding.

Not only wine, but also salt and iron are all government runs, and even tea, alum, and incense are all owned by the government.

If someone wants to snatch food from the mouth of the government, the light one will be stabbed, and the heavy one will directly lose his head.

In the official liquor system, the most strictly controlled is the main ingredient of liquor: koji.

Except for the main restaurant registered by the government, which can make its own wine, all the other foot shops must go to the main store or the government-run wine shop to buy koji and sell it.

However, this creates a loophole.

It is true that the brewing of grain wine must be koji, but fruit wine is not. Even if you don't use koji, you can still make sake by natural fermentation.

In fact, the Great Zhou court did not prohibit the use of fruit to make wine, and there were many private fruit wine workshops in various places.

However, the fruit wine produced by this method is very low-strength, bitter and astringent, and difficult to drink.

Bitterness has even become the label of Da Zhou fruit wine nowadays.

Because of this, the price of fruit wine is extremely low, and only poor drinkers who can't afford to drink rice wine will buy it to satisfy their cravings.

Wei Chen knew that the reason why fruit wine was bitter was because there was a substance called tannins in the fruit, which could not be decomposed after fermentation and remained in the wine.

This tannins are the main culprit of the bitterness of the fruit wine.

The easiest way to remove tannins is with glycerin.

One of the most important uses of glycerin is as a sweetener. Only less than one percent of glycerin needs to be added to break down the gannin in the fruit wine, effectively remove bitterness, and greatly improve the quality and taste of the fruit wine.

Weichen believes that after the addition of glycerin, the bright-looking, sweet and sour fruit wine will become the most popular wine in the Great Zhou.

……

In the past two days, Wei Chen has been busy with glycerin at home, and occasionally he will read and study when he is free, Zhang Ming and Wei Ruyi are in their eyes and anxious in their hearts.

In their opinion, Wei Chen, as a scholar, worked hard to study, inherited his father's legacy, and did a good scientific examination is the right thing.

They had the heart to persuade Wei Chen a few words, but they didn't know how to speak, after all, Wei Chen was not their biological son, but a benefactor, and they had more respect for Wei Chen in their hearts.

In the past two days, on the day when Wei Chen was about to leave for Yixue, when he saw off each other, looking at the glycerin in Wei Chen's hand, Wei Ruyi finally couldn't help it, gritted his teeth and said:

"Brother Chen, since you have entered the righteous school, you should pay attention to your academic merits, and in the future, the title of the gold list, the glorious lintel, our husband and wife can also be regarded as having an explanation for Brother Ming Zhao's spirit in the sky.

But you ...... now, but now, you are so focused on those obscene and clever skills that you haven't even opened a book for a few days at home, how can this work! ”

Zhang Ming also persuaded: "Yes, Brother Chen, reading is the right way, don't you learn from me, you can't read a single big word, and you can only sell people your strength until you die." ”

Wei Chen saw Wei Ruyi and Zhang Ming's bitter appearance, he was stunned at first, and then could only smile bitterly.

I tried my best to make money, on the one hand, so that I could not worry about the silver in the future and concentrate on the imperial examination, and on the other hand, it was so that the three members of the Zhang family could no longer have to run around for life and live more comfortably.

Unexpectedly, in the eyes of Wei Ruyi and Zhang Ming, his hard work has become a bad job......

However, if you put yourself in their shoes, Wei Chen can also understand Wei Ruyi and Zhang Ming.

For Wei Chen, the imperial examination or making money by inventing are just means to make life better, and the two are not in conflict.

But Wei Ruyi and Zhang Ming are natives of the Great Zhou Dynasty, and the concept of "everything is inferior, only reading is high" is deeply rooted in their bones, and it is normal for them not to understand what Wei Chen did.

Wei Chen saw that Wei Ruyi and Zhang Ming's eyes were full of earnestness, and he could only sigh helplessly in his heart, and said with a smile:

"Aunt, uncle, don't you know, this glycerin is a gift from my uncle Sheng, he helped me enter the Yixue study, such a great kindness, I feel that I can't repay it, I can only make this little gadget to him."

Sheng Wei was very kind to the Zhang family, Zhang Ming was also very grateful to him, as soon as he heard that this was a gift to Sheng Wei, Zhang Ming suddenly realized: "It turned out to be something that Master Sheng wanted, then it's okay, Brother Chen, why didn't you say it earlier, it made me and your aunt worry for a long time!" ”

Wei Ruyi was not as coaxing as Zhang Ming, and did not immediately believe Wei Chen's explanation, but said suspiciously: "Master Sheng's family has a big business, what do you want, what do you want to do with this thing?" ”

Wei Chen shook the glycerin in the jar and snorted: "Thousands of miles to send goose feathers, the gift is light and affectionate, although this bit of glycerin is small, but it took me two days to boil it out, the mind is always there, I think Master Sheng will like it when he sees it." ”

Seeing that Wei Ruyi was going to ask again, Wei Chen hurriedly interrupted: "Aunt Wei, uncle, I only took three days off with my husband before I came out, and I didn't report back to Yixue before sunset, but Mr. wants to punish me, it's not too early, so I'll leave first!" ”

After that, Wei Chen didn't wait for Wei Ruyi and Zhang Ming to react, lifted the jar containing glycerin, said goodbye, and slipped away without looking back.

Wei Ruyi looked up at the sun that had just risen in the east, and asked Zhang Ming with a puzzled expression: "It's only a dozen miles away, is it so urgent?" ”

Zhang Ming scratched his head and laughed a few times: "Brother Chen'er does things, naturally he has his reasons, let's not ask more." Let me ask you, can you handle the documents that are exempt from forced labor? ”

Wei Ruyi was dumbfounded when he heard this.

This matter also has to be said back to the day when Wei Chen just went home, as soon as Wei Chen went home, he showed the couple the document issued by the county government for preferential exemption from forced labor, and after listening to Wei Chen read the content of the document, both of them were pleasantly surprised.

At the beginning, the reason why Zhang Ming fled to Xiyin Village was because his father offended the local Li Zheng, who was resentful and assigned Zhang's father a thousand miles to Beijing to solve the silver errand, and when he went, he escorted less than one tael of silver, but when he delivered it, he asked for fifty taels.

In the end, Zhang's family property was exhausted, and Zhang Ming's parents were both forced to death by the creditors who collected debts, leaving Zhang Ming alone and fleeing from home.

Although Zhang Ming has settled down in Xiyin Village and married Wei Ruyi as his wife, since Wei Mingzhao's death, they have no support in this Xiyin Village.

If there really is such a day, can Zhang Xu still be as lucky as his father, and have a good person like Wei Mingzhao to protect him?

Zhang Ming and Wei Ruyi didn't dare to think about it.

For more than ten years, this kind of precarious panic has always been entangled in the husband and wife, making it difficult for them to sleep and eat.

Therefore, when Wei Chen told them that they could exempt Zhang Ming from three years of miscellaneous servitude, the couple cried with joy and were happy all night, and even slept with the paperwork in their arms.

At this time, hearing Zhang Ming mention this matter and recalling the scene a few days ago, Wei Ruyi couldn't help but smile a little more on his face.

She looked at Wei Chen, who was gradually moving away in the fields in the distance, and was speechless for a long time, and suddenly sighed.

"That's right, Brother Chen'er is getting older, and we should let go slowly."