Qian Heng had been thinking about making soap for a long time, but the time and conditions did not allow it, but now that there was the escort team that Wu Song had just brought up, it also made Qian Heng feel a lot more at ease. Pen % fun % Pavilion www.biquge.info

If it's just pig farming, there's nothing to keep secret, but when it comes to soap production, you need to keep it secret.

At the end of the Northern Song Dynasty, in fact, some people began to use soap. However, this soap is too oily, not to mention greasy to use, and the texture is also much softer, and the temperature will turn into a puddle when the temperature is slightly higher.

But even so, this soap was only affordable for the noble eunuchs.

To put it more bluntly, those who can use soap are either rich or expensive, and Qian Heng's desire to do this soap business is also well thought out.

Once soap is made, it must be a lucrative industry, being spied on, and even the possibility of thinking about it is very large, according to their current status, once this business is bigger, it will definitely cause a lot of trouble, especially in the boundary of the two roads in Jingdong, bandits are rampant, bandits are endless, and there are not many people who can really consume soap.

Therefore, Qian Heng tied Huang Sheng and himself together to make this pig farm early on, the purpose was also to have a big backer.

Although Huang Shang has no power in his hands, his status has reached its peak, especially in the hearts of literati, and he is more like a mountain. What's more, there are many disciples under Huang Shang, many of whom are in high positions, and it will be much easier for Huang Shang to come forward and open the market of Tokyo's wealthy and powerful.

In fact, in later generations, soap was only the most commonly used daily necessities in ordinary people's homes, and Qian Heng also pondered separating soap from soap. However, I don't have resources such as spices on hand, so I can only start with soap.

The workshop dedicated to making soap was specially built behind the pig farm, and in order to ensure safety and confidentiality, Wu Song also arranged four guards to guard it.

As for the manpower involved in the production, Qian Heng did not look for the clansmen and servants of the Qian family, but asked Lu Zimo to recruit the slaves and maids of the Qian family to do things.

Lu Zimo is also very insightful about this, the slave and maid of the Qian family are destined to rely on the Qian family for the rest of their lives, and there will be no leakage of secrets.

In the Song Dynasty, the status of slaves and maids in the big family of the official eunuchs already had relatively independent rights, and they could decide to be slaves for life according to their own intentions. At least it will no longer be bought and sold as the goods of the master's family as it was in the Han and Tang dynasties, and the identity of the domestic slave in the Song Dynasty is limited to individuals, and those who are domestic slaves and maidservants are only limited to individuals, but the heirs will not have slave status.

It can be said that the slaves and maids of the Song Dynasty can already intermarry with ordinary people, and more often, the slaves and maids of the Song Dynasty have become a professional existence.

And these slaves and maids selected by Lu Zimo signed a lifelong contract with the Qian family.

Although Qian Heng is not very proficient in some specific chemical formulas, he also knows that acid and alkali chemicals cannot be contained in metal vessels, let alone carry out chemical reactions in them.

The vat of water was poured into the clay jar, and a fire began to be lit below, and Qian Heng poured a large amount of sodium hydroxide solution into it while adding a sufficient amount of oil. The lard, mutton fat, and even the residues collected from the oil mill were all thrown into the pot by Qian Heng.

It didn't take long for a very unpleasant smell to waft out, the space of the entire workshop was not very large, and Qian Heng was also refining soap for the first time, and he didn't expect the smell of this process to be so pungent.

Not only that, but the contents of the pot looked slimy and disgusting as the wooden sticks kept stirring.

Lu Zimo, who was standing beside Qian Heng, covered his nose and forcibly asked, "Brother Heng, can this thing really wash off the filth on your body?" ”

Qian Heng nodded firmly, on this point, Qian Heng was still very sure.

Especially in this first pot, Qian Heng must stubbornly guard this pass.

Boiling soap itself is a delicate job, and if you want to make high-quality soap raw materials, you must mix the lard and sodium hydroxide into it little by little. In addition, it is necessary to constantly add water to prevent qualitative changes.

It was boiled until the things in the whole pot gradually mixed together, and the water added in it was no longer integrated, so Qian Heng stopped adding water and ordered someone to remove the firewood at the bottom of the pot.

Coagulation of soap cannot be carried out in this pot.

Qian Heng arranged for someone to scoop all the things in the pot into the square wooden barrel that had been prepared long ago while it was hot, and waited until the juice gradually cooled before Qian Heng skimmed out the oil floating on the top and put it in the prepared porcelain jar.

This oil is a good thing, chemically called glycerin, and in addition to being used in cosmetics, it is also a good sweetener, and it can also combine the tannins in the fruit to remove astringency.

Whether it is to make cosmetics or to remove astringency from fruit wine, a large amount of this glycerin is used, after all, it is glycerin extracted from biological fats, and there is no problem when eating it with a good ratio.

Qian Heng skimmed out this layer of viscous glycerin and advised, "In the follow-up boiling, you must skim out this layer of oil separately, I have a lot of use!" ”

After collecting the glycerin as much as possible, Qian Heng cleaned up the water and impurities floating below, and the rest could only wait for natural solidification, and after cutting into pieces, it was the initial soap.

Lu Zimo stared at the large lump of soap in the wooden barrel that had not yet taken shape, and raised his eyebrows slightly, "Brother Heng, this color is too ugly, just cut it into pieces, can you sell it?" ”

Qian Heng smiled, if you want to make the color more beautiful, it's not impossible, as long as you add a little rouge powder, you can make this soap look good and smell good, but Qian Heng doesn't have this plan now, and now Qian Heng doesn't plan to make this soap how high-end, everything has to wait until his status and strength are enough to protect this interest, Qian Heng will consider upgrading this soap.

Thinking of this, Qian Hengcai smiled and said, "Zi Mo doesn't need to worry, I still need time to make spices and pigments, this matter is in a hurry, so you also have to help more, this year I will collect more materials for extracting spices and pigments, and I will tell you how to do it when the time comes!" ”

Lu Zimo glanced at Qian Heng thoughtfully, and didn't ask again.

"Okay, let's follow the process I showed you!"

After Qian Heng instructed the slaves and maids present, he said to Lu Zimo again, "Zimo, the next thing will be supervised by you!" ”

After settling down the follow-up soap-making arrangements, Qian Heng went back to the room that the pig farm had temporarily prepared for him, cut the cooled and solidified soap into pieces, took a few pieces and wrapped them in straw paper, got up and brought them back to the Qian family's mansion.

In the Qian family's mansion, Huang Sheng and Li Ruobing, who received the invitation, were patiently waiting for Qian Heng's surprise to them.