Northern Song Dynasty: It’s a showdown, who said I, Zhao Zhen, don’t have a son?

Chapter 88 Soap Making Guide
The gate of the small courtyard was closed tightly, and two stones were moved to block the door.

Zhou Fei stood in the courtyard, quite confused. Why did he make such a grand gesture?
When he walked into the kitchen, he found that Zhao He and Guo Huai were breaking the stones into small pieces and throwing them into the stove for roasting.

In order to ensure the temperature, Zhao He continued to add charcoal blocks until the stove was burning red.

The stove is not big, and it can bake up to one kilogram of stones at a time. The continuous process of firing stones like this takes half an hour, and about ten kilograms of white stones are obtained.

Guo Huai and the others couldn't help but feel confused.

"Xiao Langjun, what are you burning this stone for?"

"Could it be food?"

Zhao He rolled his eyes and looked at Zhou Fei: "I don't know how to make food. Who can eat this stone?"

No matter how hungry you are, you can't even eat this stuff!

Zhou Fei chuckled: "It's okay, young man, you continue to do your business, I'll watch from the side."

After the fired quicklime cooled, Zhao He collected it and crushed it into powder with a hammer.

Lime is calcined to form quicklime. In ancient times, this material was mostly used to paint walls and was also used as medicine.

Zhao He then took a clean pickle jar and carefully poured the lime into it, fearing that it would hit his face. After pouring it, he began to add water to it. Almost instantly, a puff of white smoke came to life, and the contents in the jar The water boiled immediately.

Quicklime is calcium oxide. When it meets water, it will dissipate a lot of heat and generate calcium hydroxide. With such a large amount of lime, it is easy to boil the water.

Guo Huai and Zhou Fei both stared wide-eyed. The water actually boiled without heating it?

Guo Huai was stunned for a long time before murmuring: "Xiao Langjun, could this be witchcraft..."

Halfway through, he didn't dare to continue. The witchcraft of the previous dynasty was the biggest taboo. Anyone who came into contact with it was beheaded. Xiao Langjun is only 16 years old now. He has watched him grow up since he was a child. Da, how did you come into contact with the art of witchcraft?
Zhao He also consoled him: "Hey, Uncle Guo, it's just a basic chemical reaction. That's why I asked you to find this limestone."

After a while, when the boiling on the altar gradually subsided, Zhao He took the prepared herbal lye solution.

As a natural plant alkali, the main component of plant ash is calcium carbonate. If the plant ash is boiled and soaked in water for one day, the clear solution will be an alkaline solution.

Alkali were not used in the Song Dynasty, so making alkaline solutions by local methods was much faster than other methods. Although the purity was not enough, it was enough as long as the calcium carbonate inside and the calcium hydroxide in the lime solution could react.

With limestone and a solution of plant ash, caustic soda can be made.

He slowly poured the clear liquid into the lime water solution and mixed it. After a while, after the turbid material settled, a clear layer of solution was left on the surface.

These clear liquids are exactly the caustic soda that Zhao He needs.

Caustic soda is an industrial raw material and is extremely corrosive. Zhao He also carefully used a porcelain spoon to scoop out the clear liquid and put it into a porcelain bowl, for fear of missing anything.

Once caustic soda comes into contact with the skin, it will quickly decompose the fat in the skin, causing severe burns. If it is not cleaned enough, you can use your hands to take pictures of alien shapes.

On the stove, the lard boiling in the pot has become clear, and the time is obviously almost here.

Pour in the caustic soda, and Zhao He begins to stir and heat over low heat. This process will last for a long time.

Seeing Zhao He's serious expression, Guo Huai and Zhou Fei did not bother him.

Zhao He stared at the condition of the oil pan to ensure that the oil was fully saponified.

It continued like this, and after about half an hour, Zhao He added the essence he extracted.

A fragrance immediately rose in the air, and Zhou Fei knew what it was as soon as he smelled it.

Isn’t this the fragrance of flowers in Chunming Tower?
After stirring for a while, Zhao He turned off the heat, added salt water, and then called them over to put the cooked soap liquid into the container.

There were about twenty kilograms of lard, and in the end only about ten kilograms were left. Finally, the soap liquid was divided into fifty small containers to wait for solidification.After reaching this point, Zhao He was relieved and his expression relaxed.

"It's done, let's wait for it to dry and see the effect."

Seeing this, Guo Huai finally spoke.

"Xiao Langjun, what is this?"

Zhao He said with a smile: "This is soap, which is similar to the passion soap on the market today, but the cleaning effect is better and the fragrance is richer."

What do women like best?
Rouge, gouache, white soap, anything that can make them smell good. They like it.

On the one hand, this can make you more different, on the other hand, it can attract men.
However, the scent of the passion soap on the market can indeed increase, but it does not last long and has almost no cleaning effect. As a result, when taking a bath, you always have to clean it and then apply white soap to enhance the fragrance.

But this soap is different. It still has a fragrance after washing. The fragrance lasts for a long time, and it can be washed cleanly, which can save a lot of trouble.

Moreover, the white soap is generally prepared for powerful women. One portion costs upwards of ten guan, and ordinary people cannot afford it.

Guo Huai was quite surprised when he heard this: "The young man can still do this, he is really strange!"

Zhou Fei asked curiously: "I remember that this is not what you have been researching recently, right? It seems that you haven't used the thing you asked me to customize before?"

Zhao He smiled mysteriously: "That will be used later, we will do this first during this period."

Several people looked at the solidifying soap with different expressions.

"If it is true as Xiao Langjun said, then the value of this thing in Bianjing will definitely be very high. If it is matched with the passenger flow of Fan Tower, it will surely make a lot of money!"

"I thought you wanted to run Fan Lou's shop there, but now you are selling this soap, which is really awesome!"

Guo Huai said excitedly: "Then should we produce more of this during this period and then sell it directly to Fan Lou?"

Zhao He shook his head: "There is no rush in this matter. I have my own plan. If I want to make more money, I need to use adequate marketing methods."

Although the two of them didn't know it, seeing how confident Zhao He was, they guessed that Zhao He already had a method.

Xiao Langjun’s methods never disappoint.

"By the way, today's events cannot be leaked for the time being. Even the people in Chonghe Night Market should try not to. During this period, the production of soap must remain hidden, otherwise it will cause unnecessary trouble."

Guo Huai smiled. He was originally from Xiao Langjun's side. Even if Zhao He didn't tell him, he wouldn't leak it.

Zhou Fei immediately patted his chest and said, "Don't worry, young man. I will follow you from now on and there will definitely be no leaks."

Zhao He nodded, and then several people heard a knock on the door.

Several people closed the door of the kitchen and immediately moved the stones to open the door.

The person who came was none other than Bao Zheng. He was dressed in regular clothes and went out, and he was the only one.

Bao Zheng looked at Zhao He with a serious expression.

"Why are you blocking the hospital door in this clear sky and white sun?"

Zhao He said helplessly: "Master Fu, there is no rule against blocking the gate of your courtyard, right?"

Bao Zheng didn't say anything, but the look on his face was still solemn.

"Did you write the relief policy that Cao Lang gave me?"

(End of this chapter)