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219, making soap

Andu thought for a moment and said, "The most important thing in my office is the notes I took, because they contain the town's five-year plan for the next five years."
Sean sighed:
"Sigh, it's a bit of a headache for the enemy to find out about the five-year plan, but it's okay. This is just our wrong plan. There is still a lot of room for revision in the future.
But this incident also reminds us: in the future, important information in the territory, such as soap, paper-making formulas and other formulas, cannot be placed in your office, but must be placed in the castle, and a reliable person must be assigned to guard them."
"Yes, sir." Anduin's face was serious.
Now that the spies have obtained their information, it has probably been passed on and it is too late to remedy the situation.
Sean didn't want to punish Anduin, but changed the subject:
"Anduin, are you ready with everything I asked you to prepare today?"
Anduin cheered up and replied:
"Of course! Now the bamboos have been soaked in the pond where mud was dug in the south. There are a hundred bamboos in total.
The ashes and lard have been shipped to the mill."
"Very good! Time is running out, let's go to the mill now!"
Sean turned around and prepared to take Anduin and Windsor out of the administration hall.
Seeing that Anduin still had a serious look on his face, Sean said in a relaxed tone:
"Relax, aren't they just a bunch of thieves? Our territory will undergo earth-shaking changes in a while. Even if they get the information, it will be useless... By the way, what's the red mark on your neck?
What's going on?"
Anduin didn't know about Hongyinzi yet, so he was shocked when he heard Sean's words, and hurriedly took a look in the mirror in the administration hall.
Finding that there was indeed a red seal, Anduin said sheepishly:
"This matter also starts with the fisherman's daughter Anna. Just now I went to the river to help her build a castle..."
The three of them talked and gradually walked away.
...
After a while, Sean and the other two came to the mill and prepared to make soap.
In fact, Sean doesn't know how to make paper, and he has never only made soap, just like most ordinary people.
But Sean knew the principles of making soap and paper and knew their final products, and that was enough.
This is just like the rabbit in the previous life who made a nuclear bomb. It is enough to know the principle of a nuclear bomb and know that a nuclear bomb can be made. Others can slowly make technological breakthroughs.
The principle of papermaking is very simple, that is, soaking + boiling + mashing bamboo to form pulp, and then drying the pulp.
But Sean didn't know how many days the bamboo should be soaked, so he could only make a decision based on the situation.
Let it soak for ten days first. Ten days will not last for twenty days. One day it will be soaked to pieces.
The principle of making soap is "saponification reaction". Simply put, it is the reaction of lye and oil, and the final product is soap.
Grease is easy to find. When I was leveling today, Sean specifically studied the [Stonetooth Wild Boar]. Pigs have the most abundant grease and are also the cheapest.
As for the lye, it's even simpler. Soak wood and ashes from burning weeds (commonly known as plant ash) in water, stir thoroughly, and filter, and the resulting lye is lye.
As for the details of the saponification reaction, Sean still needs to explore slowly.
...
After entering the mill, Sean looked forward.
At this time, in addition to a large piece of fat and the prepared plant ashes, there were several people standing in the mill.
Sean knew these three people. They were the three Yoon people who came to greet him on the day he returned to Riverside Town. They were the aborigines recruited by Anduin.
When the three Euns saw Sean and Anduin arriving, they immediately came over to greet them:
"Good evening, respected lord, Lord Anduin!"
"Hello!" Sean nodded to the three of them and then ordered:
"You go find two large pots and put them on the stove...and find a few buckets by the way, one of which should be filled with water."
There are several unused stoves in the mill, which Sean used to distill spirits, and they are now in good use.
"Okay, sir!" Youn and the other three quickly replied, and then left the mill.
...
Ten minutes later, they brought the big pot and bucket that Sean asked for. Yoon was also smart enough to bring a lot of firewood and start the stove.
After lighting the stove, Sean nodded with satisfaction:
"Okay, you go out first and wait outside the door."
"yes."
The three of them walked out of the mill without any hesitation.
After the three of them left, Anduin looked at Sean: "Sir, don't we need their help? I think they can be trusted."
"No need." Sean shook his head: "Anduin, soap is not as simple as distilling spirits and perfume. From now on, every step must be done separately and try to keep it a secret."
"Okay, sir." Anduin nodded: "What is our first step?"
Sean looked at the hot pot and said slowly:
"The first step, of course, is to prepare the oil and lye. Windsor, go and heat the fat and boil it into oil."
"Okay, sir!"
Windsor put the fat into the cauldron and gently poured Dou Qi into the fat. The fat instantly shattered into tiny particles.
The work of boiling oil suddenly became much easier.
...
All that's left is to make the lye.
There was no one else around now, so Sean had to do it himself.
As Sean was doing this, he explained to Anduin:
"The method of making lye is very simple: put the plant ash into a wooden barrel, add water a little more than twice the volume of the plant ash, then stir it thoroughly, dilute and filter!"
After stirring evenly, Sean used his water control ability to control the water elements in the bucket. The impurities in the water quickly settled down, and the upper layer became extremely clear.
Sean continued: "Anduin, the soap-making workers definitely don't have water mages. Just ask them to use a cloth with large gaps when filtering."
"Okay." Anduin nodded.
Then Sean began to control the water flow, and the clear lye flew out of the bucket and into the second cauldron.
Then Sean lit the stove, heated the caustic soda solution, and at the same time poured the lard cooked by Windsor into the pot little by little.
After the lard was poured in, Sean began to stir it with a stick.
The lye and grease undergo a saponification reaction at high temperatures, and the grease gradually disappears, leaving a layer of viscous liquid on the upper layer of the iron pot.
After stirring for a while, Sean used the water control technique to fish out the liquid and observed it. He found that there was still some grease, so he continued to add the remaining lye. This was repeated until all the fat was consumed and there was no more grease in the viscous substance.
Until there is no more grease.
At this point, what is in the pot is boiling hot soap solution.
During the stirring process, the soap solution continues to thicken.
Sean was tired of stirring, so he simply called Eun in who was standing outside the door and asked him to continue stirring.
Yoon didn't know what was in the pot, he just smelled a strange smell.
Chapter completed!
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