"Phew~"

"It's still not good, although the salt has become thinner and no longer clumps, but the taste is still very bad, which shows that there are still a lot of impurities, and how to get rid of the remaining insoluble impurities."

A few days later, Liu Jin spit out a mouthful of bitter water, and the taste of the salt that had just been boiled was still not good, and Liu Jin knew that the insoluble impurities in it still existed and had not been removed.

But in the past few days, Liu Jin has not done anything, and has been staying at home, researching and experimenting with many methods.

"Lime water contains alkaline, it should be able to react with some of the impurities and remove some of the impurities, is it because both sides are stable and there is no chemical reaction?"

Liu Jin touched his chin, a little crazy, he really regretted that he didn't study hard at the beginning, this chemistry has a very big effect, if he had studied chemistry a little more seriously and purified coarse salt, it would not have been Zhang Fei eating beans, a piece of cake.

"It seems that we can only try the last method, and I don't know if the China on the tip of the tongue is a lie."

Soon, Liu Jin started experimenting again.

The reason why he is confident that he can purify coarse salt is because he used to watch TV when he watched China on the tip of his tongue, and one of the episodes talked about the mining of salt in Zigongjing, Sichuan, and one of the details talked about grinding soybeans into soybean milk and adding them to the salt brine to boil, so as to remove the impurities in the brine in such a way, so as to obtain extremely pure salt.

This method is a method summed up by the working people who have mined well salt in Zigong area for 2,000 years, and the quality of Zigong's well salt has always been very high, especially after the middle and late period of concealment, the well salt here has been purified by various methods, and the purity has almost reached more than 99%, and there is no difference between the salt eaten in later generations.

However, the salt used in Zigongjing is the brine collected from the ground, and the sea brine used by the sea by the sea, and the impurities contained in the two may be different, and Liu Jin is also very worried about whether this method is useful for sea salt.

"No matter, give it a try."

Liu Jin is a man of action, and he took the soybeans bought by Zhao Erhu to the stone mill on the side and began to grind soy milk.

"There should still be calcium in the soy milk, and after the soybean milk is ground, it will have a chemical reaction with the brine in a boiling state."

While grinding soybean milk, Liu Jin also carefully recalled in his mind the documentary he had watched, although the well salt of Zigong is well salt, but in the end it is still boiled out by boiling such a link, and there are many things worth learning.

"Brother Jin, what's going on with you these days, why have you been tossing around at home and not reading books, is there something wrong with you?"

Just when Liu Jin was grinding soy milk, Wang walked in, and when he saw Liu Jin starting to toss again, he couldn't help but ask.

She is very worried now, last time Dr. Zhang said that although Liu Jin is fine, because of his head injury, it is very likely that he will leave some sequelae, so there may be some abnormal behavior.

"Mother, I'm fine."

"Didn't I tell you that I was researching boiling salt."

Liu Jin said with a smile.

"What else do you need to study to boil salt, you just go to the beach to see it, you have boiled it in the past few days and poured it into the water, and added some things to it, I don't know what you are tinkering with, it is better to read a few more books if you have that effort, and strive to have a high school in the autumn next year."

Wang shook his head as he spoke, although her son's behavior was a little grotesque, but she loved Liu Jin very much, so she let Liu Jin toss around indiscriminately here.

"The salt I cook is different from other people's salt, you will know when the time comes, and our family will rely on this if we want to get rich in the future."

"As for Qiuyu, it's still early, and it's too late to read the book slowly."

Liu Jin didn't care, and asked himself to read the ancient books, or those four books and five classics, it really tasted like chewing wax, and he wanted to sleep after reading it a few times, and it was estimated that it was really useless to take the road of the imperial examination.

However, Liu Jin didn't dare to say it directly to the Wang family like this, otherwise no matter how much the Wang family loved Liu Jin, he would definitely pick up a broom and beat Liu Jin hard, she had been hard-working to raise Liu Jin for him to study, and she didn't expect Liu Jin to be able to cross the dragon gate and get ahead by reading.

In the matter of reading, she will never make the slightest concession.

"Whatever you want, you arrange it yourself, I'll go to work in the fields."

Wang looked at Liu Jin, shook his head, and didn't care too much.

"Whew~"

"Without the labor force of Erhu, it is really tiring to do this physical work."

Soon, Liu Jin couldn't help but have a sore back, thinking of Zhao Erhu, he didn't have a lot of time to squander like Liu Jin, even if he had the intention to follow Liu Jin, the family affairs had to be busy.

After resting for a few minutes, Liu Jin continued to grind soy milk, and for half an hour, Liu Jin finished grinding a small bucket of soy milk, and his hands were sour.

"In the future, when you have money, you must buy a cow, otherwise you will be really tired to death."

After grinding the soybean milk, Liu Jin remembered the most important labor force in ancient times, but unfortunately the entire Xiahetun was bitter, and no one could afford to buy cattle at all.

"The time is just right, and the brine here is already boiling, just right to add it."

Soon, Liu Jin regained his spirits, looked at the brine that had been re-boiled, and began to get busy again, slowly adding spoonfuls of soy milk, and then began to watch intently.

At first, there was no reaction, but soon, some white and yellow SE floats began to appear on the boiling brine, and then these floats became more and more, and soon formed a patch on the surface.

"Haha, it really works."

Seeing this scene, Liu Jin couldn't help but jump up with joy.

"Quickly skim off these floating residues, all of them are impurities."

Liu Jin happily took out the spoon and slowly skimmed out the floating powder.

After skimming for a few minutes, there was no floating powder in the pot, even if Liu Jin added some soy milk into it, there was also no floating powder, which means that the impurities in it have been removed.

At the same time, the originally turbid brine gradually became clear and translucent, which made Liu Jin feel very confident, and he was very much looking forward to what would happen to the salt boiled in this pot.

The pot used by Liu Jin is a small pot, and there is not much brine in it, so it is also very fast when it boils.

Slowly, as the water in it became less and less, Liu Jin also turned the fire into a small fire, and the brine no longer tumbled, indicating that it also began to slowly condense a layer of white grains.

When only the middle part of the brine remains, layers of snow-white grains form around the entire pot, and there is no doubt that this is salt.

"Haha, yes, yes, the salt is full of flavor, and there is no difference between it and the salt eaten in later generations."

Liu Jin didn't care that it was still very hot, so he shoveled down a little salt with a shovel and put it in his mouth to taste it, and immediately laughed happily.

"The color is snow-white, the crystals are small, the shape is delicate and granular, the taste is pure, and there is no bitterness or astringency, which makes a fortune."

Li Jin shoveled out a shovel of freshly boiled salt, and after careful observation, compared 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, hurry up and take a look at the salt I just cooked."

Liu Jin immediately beckoned Zhao Erhu over and asked him to see the snow-white, snow-white new salt in the pot.

"It's so white, so fine, this salt tastes so good."

"Brother Jin, did you succeed?"

Zhao Erhu looked at the salt in the pot carefully, deducted a little bit and tasted it, and suddenly his eyes were as big as a cow's eyes, and he asked in disbelief.

"Well, Huzi, we're going to get rich."

Liu Jin nodded and said excitedly: "How much Wen a pound do you think is more appropriate for this kind of salt?" ”

"Brother Jin'er's boiled salt has to be at the same price as green salt."

Zhao Erhu touched his head, thought about it and said.

"Green salt, well salt, pool salt, it seems that we first want a name for our own salt, and this sign must be loud."

Speaking of green salt, Liu Jin couldn't help but touch his chin and began to think.

From later generations, it is natural to know very well that this brand is this thing, once the brand is lit up, the benefits can be described as many, and things without a brand will not work after all.

"What is it called?"

Liu Jin looked at the salt in the pot, snow-white, snow-white, and gently pinched it with his hand, which was very delicate, like fine sand.

"If there is, it's called Snow Salt."

"Huzi, what do you think of the name Xueyan?"

Liu Jin's eyes lit up, and he quickly thought of a good name, turned his head and said to Zhao Erhu on the side.

"Xueyan, this name is okay, a reader is a reader, and the name is good."

Zhao Erhu looked at the salt in the pot and said humbly.

"Huzi, this snow salt is related to the two of us to make a fortune in the future, without my permission, you can't say anything."

Liu Jin nodded, then thought about it and said to Zhao Erhu.

Although this snow salt is boiled, Li Jin also knows that the interests are moving, he has no roots and no power, and if he wants to make a fortune, he must keep this secret.

Of course, how to purify coarse salt into refined salt, this process is currently only clear to Liu Jin himself, even if it is the tiger next to him, he can't figure it out.

"In the future, to expand production capacity, we must have more manpower, we must be trustworthy people, and we must separate these steps, each of which is only responsible for one step, and it is best to add some useless links to increase the difficulty of others to spy on secrets."

Soon, Liu Jin's mind began to think of some things to do later, there was no way, Liu Jin now relied on this method of purifying coarse salt to make a fortune, and of course he had to keep his way to make a fortune.