"It still doesn't work. Although the salt has become thinner and no longer lumps, the taste is still very bad. This shows that there are still many impurities. How can we remove the remaining insoluble impurities?"
A few days later, Liu Jin spit out a mouthful of bitter water. The freshly cooked salt still tasted bad. Liu Jin knew that the insoluble impurities in it were still there and had not been removed.
But these days, Liu Jin has done nothing. He has been staying at home, researching and experimenting with many methods.
"Lime water contains alkaline, so it should be able to react with some impurities in it and remove some of the impurities. Is it because both parties are stable and there is no chemical reaction?"
Liu Jin touched his chin and went a little crazy. He really regretted not studying hard at the beginning. This chemical effect is very powerful. If he had studied chemistry more seriously, purifying coarse salt would not be the same as Zhang Fei eating beans.
, a piece of cake.
"It seems that I can only try the last method. I don't know if the China on the tip of my tongue is a lie."
Soon, Liu Jin started experimenting again.
The reason why he was confident that he could purify coarse salt was because he had watched China on the Tip of the Tongue while watching TV. One of the episodes talked about the mining of Zigong well salt in Sichuan. One of the details was about grinding soybeans into soy milk and adding
Boil it in salt brine to remove impurities in the brine, thereby obtaining extremely pure salt.
This method is a method summed up by the working people in the Zigong area who have mined well salt for a full 2,000 years. The quality of Zigong's well salt has always been very high, especially after the middle and late Qing Dynasty, the well salt here has been processed through various methods.
After purification, the purity has almost reached over 99%, and it is no different from the salt eaten by later generations.
However, the Zigong well salt used here is brine collected from the ground, and the sea brine he uses from the seaside may contain different impurities. Liu Jin is also very worried about whether this method is useful for sea salt.
"No matter, let's give it a try first."
Liu Jin was a man of action. He took the soybeans bought by Zhao Erhu to the stone mill nearby and began to grind the soybean milk.
"There should still be calcium in the soy milk. After the soy milk is ground, it must undergo a chemical reaction with the brine in a boiling state."
While grinding the soy milk, Liu Jin carefully recalled the documentary episode he had watched in his mind. Although the Zigong well salt is well salt, in the end, the salt is boiled out through the process of boiling. There are many things in it.
They are all worth learning.
"Brother Jin, what's been going on with you these past few days? Why have you been messing around at home and not reading? Is there something wrong with you?"
While Liu Jin was grinding soy milk, Mrs. Wang walked in. Seeing Liu Jin starting to mess around again, she couldn't help but ask.
She is very worried now. Doctor Zhang said last time that although Liu Jin is recovering, he is very likely to have some sequelae due to his head injury, so he may behave abnormally.
"Mom, I'm fine."
"Didn't I tell you that I'm studying boiling salt?"
Liu Jin smiled and said.
"What else do you need to study about boiling salt? Just go to the beach and see if it will be enough. You have boiled it in the past few days and poured it into the water. You have also added some various things to it. I don't know what you are messing with.
Well, if I have the time, I might as well read more books and try to go to high school next autumn."
Mrs. Wang shook her head as she spoke. Although her son's behavior was a bit weird, she loved Liu Jin very much, so she let Liu Jin mess around here.
"The salt I cook is different from other people's salt. You will know when the time comes. This is how our family will make a fortune in the future."
"As for Qiu Wei, it's still early, so I can read the book slowly."
Liu Jin didn't take it seriously and asked himself to read the ancient books. The Four Books and Five Classics were really boring. After reading them for a few times, he felt like sleeping. It was probably impossible to take the imperial examination route.
However, Liu Jin did not dare to tell Wang directly like this, otherwise Wang would definitely pick up a broom and beat Liu Jin severely no matter how much she loved Liu Jin. She had always worked hard to raise Liu Jin and provide for her.
When he studied, he did not expect Liu Jin to be able to achieve success by studying.
When it comes to studying, she will never make any concessions.
"It's up to you. You can make your own arrangements. I'm going to work in the fields."
Wang looked at Liu Jin, shook her head, and didn't care too much.
"Huh~"
"Without the labor force of Erhu, it would be really tiring to do this physical work."
Soon, Liu Jin couldn't help but feel soreness in his back and thought about Zhao Erhu. Unlike Liu Jin, he didn't have a lot of time to waste. Even if he wanted to follow Liu Jin, he still had to finish his family affairs.
.
After resting for a few minutes, Liu Jin continued grinding soy milk. It took half an hour for Liu Jin to grind a small bucket of soy milk. His hands were all sore.
"When I get rich in the future, I must buy a cow, otherwise I will die from exhaustion."
After grinding the soy milk, Liu Jin remembered the most important labor force in ancient times. Unfortunately, the whole Xiahetun was miserable and no one could afford cattle.
"The time is just right, the brine here is already boiling, just add it in."
Soon, Liu Jin regained his energy. Looking at the brine that had been boiled again, he began to work non-stop again. He slowly added spoonfuls of soy milk, and then began to watch intently.
There was no reaction at first, but soon, some white and yellow floating dust began to appear on the boiling brine, and then more and more of these floating dust began to form on the surface.
"Haha, it really works."
Seeing this scene, Liu Jin couldn't help but jump for joy.
"Hurry and skim off these floating dust, they are all impurities."
Liu Jin happily took out a spoon and slowly skimmed out the floating powder.
After skimming for several minutes, there was no more floating residue in the pot. Even if Liu Jin added some more soy milk, there was still no floating residue, which meant that the impurities inside had been removed.
At the same time, the originally turbid brine gradually became clear and translucent, which greatly increased Liu Jin's confidence and he was very much looking forward to what the salt would do after boiling it in this pot.
The pot Liu Jin used was a small pot, and there wasn't much brine in it, so it cooked quickly.
Slowly, as the water inside became less and less, Liu Jin also turned the fire to a small fire, and the brine no longer rolled, indicating that a layer of white crystal grains had begun to slowly condense.
When only the middle part of the brine was left, layers of snow-white crystals formed around the entire pot. There was no doubt that this was salt.
"Haha, yes, yes, it's full of salt, and it's no different from the salt eaten by later generations."
Liu Jin didn't care that it was still very hot, so he used a shovel to scoop out a little salt and put it in his mouth to taste it, and he immediately laughed happily.
"The color is snow-white, the crystals are small, fine and granular, and the taste is pure without any bitterness. Now you will make a fortune."
Li Jin shoveled out a shovelful of freshly boiled salt, observed it carefully, and compared it with the salt of later generations. There was no difference at all.
"Brother Jin, I'm here."
At this time, Zhao Erhu's voice sounded outside the door.
"Huzi, come here quickly and take a look at the salt I just cooked."
Liu Jin immediately called Zhao Erhu over and asked him to see the snow-white new salt in the pot.
"It's so white, so fine, and the salt tastes really good."
"Brother Jin, did you succeed?"
Zhao Erhu looked at the salt in the pot carefully, took a little and tasted it. His eyes were as big as a cow's eyes and he asked in disbelief.
"Well, Huzi, we are going to get rich."
Liu Jin nodded and said excitedly: "How much do you think a pound of salt like this should be sold for?"
"The salt cooked by Brother Jin must be about the same price as green salt."
Zhao Erhu touched his head, thought for a while and said.
"Green salt, well salt, pool salt, it seems that we must first give our own salt a name. The sign must be loud."
Speaking of green salt, Liu Jin couldn't help but touch his chin and start thinking.
Coming from later generations, they naturally know very well about brands. Once a brand becomes famous, there are many benefits. Things without a brand will not work after all.
"What kind of salt should I call it?"
Liu Jin looked at the salt in the pot. It was as white as snow. He pinched it lightly with his hands. It was very fine, like fine sand.
"If you have it, it's called snow salt."
"Huzi, what do you think of the name Xueyian?"
Liu Jin's eyes lit up and he quickly thought of a good name. He turned to Zhao Erhu and said to him.
"Xue Yan, this name is okay. Scholars are scholars, so the name should sound good."
Zhao Erhu looked at the salt in the pot and said in a naive manner.
"Huzi, this snow salt is related to our future wealth plans. You can't say anything to anyone without my permission."
Liu Jin nodded, then thought about it and warned Zhao Erhu.
Although the snow salt has been boiled, Li Jin also knows that the benefits are attractive and he has no roots and power. If he wants to make a fortune, he must keep this secret.
Of course, only Liu Jin himself knows how to purify coarse salt into refined salt. Even Hu Zi next to him can't figure it out.
"To expand production capacity in the future, we will definitely need more manpower, and we must have trustworthy people. We must also separate these steps. Each one is only responsible for one step. It is best to add some useless links to increase the number of others.
The difficulty of spying on secrets.”
Soon, Liu Jin's mind began to think of some things to do later. There was no way. Liu Jin was now relying on this method of purifying coarse salt to make a fortune. Of course, he had to take good care of his way to make a fortune.
