Liu Jin gently deducted a little coarse salt, and then put it in his mouth to taste it.

"Phew~"

Soon, Liu Jin hurriedly vomited.

The taste of this coarse salt is really too bad, and the snow-white and snow-white refined salt of later generations only tastes salt, and there will be no other impurities to taste, but this coarse salt tastes very light, and bitterness and astringency account for the majority.

"This salt is so unpalatable."

Liu Jin spit out several mouthfuls of saliva, and at the same time couldn't help but say.

"Of course, the sea salt we cook is not as good as the pool salt in Shaanxi and Shanxi, nor is it as good as the well salt in Sichuan, let alone the green salt that only those landlords and old fortunes can afford."

"This sea salt is sold in the market for sixty or seventy wen a catty, but this pool salt and well salt cost hundreds of wen a catty, and the best green salt is said to cost two or three hundred wen a catty, which cannot be compared or compared."

"But although this pool salt, well salt, and green salt are good, its output is not much, especially this green salt, the yield is very low, and although our sea salt tastes bad, the yield is very high."

Hearing Liu Jin's words, Zhao Heishan smiled, showed a mouthful of black and white teeth, and said all kinds of salt.

"This salt is also divided into pool salt, well salt, and green salt?"

Hearing Zhao Heishan's words, Liu Jin was slightly stunned.

Naturally, he has never heard of the difference between this salt, but he knows that this salt is divided into iodized salt and non-iodized salt, and he grew up eating iodized salt since he was a child, and he just knew that eating iodized salt can prevent big neck disease.

"Of course, the salt produced in different places is completely different, even if it is all sea salt, the sea salt in different places is also different."

"The sea salt boiled by our Changli is yellow from the white seed, and the sea salt from Shandong is red from the white seed, which is different, and the pool salt is also different from the well salt, the pool salt is the salt made from the brine mined from the saltwater lake, the well salt is mined from the brine well, and the sea salt is made from the sea water from the seashore and boiled with sea water, and each salt is different."

Although Zhao Heishan is a farmer, he knows a lot about this salt, which makes Liu Jin very curious, and he thinks about it and asks.

"Uncle Montenegro, where did you know these things?"

"At first, I didn't know these things, but the salt dealers who came to our village to collect salt told us, they traveled from south to north, saw a lot, and did this for a living, so naturally it was clear."

"Each of these salt dealers has their own territory, and the salt produced in each of their territories is also different, and sometimes you can tell at a glance whether anyone has crossed the border to trade."

Zhao Heishan smiled and said.

"This green salt can be sold for more than 200 wen a catty, which is many times that of other salts, what kind of green salt are you?"

Liu Jin nodded, and then remembered that the green salt he just said could be sold for more than two hundred wen a catty, and this price was more than ten times more expensive than this coarse salt, which was really a bit incredible.

"How do I know what the green salt looks like, this green salt is said to be used by those officials, landlords and old wealthy, and the rich and noble people are said to use this green salt to brush their teeth in the morning."

Zhao Heishan shook his head and said.

Hearing this, Liu Jin probably knew what was going on, the sea salt cooked by Zhao Heishan and others was what later generations called coarse salt, because this coarse salt had not been refined, it contained a lot of impurities.

These impurities include insoluble earth, fish bone powder, shell powder, and the like, as well as soluble magnesium chloride, calcium chloride, and other impurities.

Because the content of these impurities is too much, the salt looks impure in color, unlike the salt purified in later generations, which is snow-white, and at the same time the taste is very poor, and various flavors are mixed together, and also occupy the main taste.

Green salt is expensive, it should be that this salt contains fewer impurities, the taste is relatively pure, and the production is limited, so it can only be supplied to the powerful, so this price is naturally very expensive.

"Maybe this is a good way to make a fortune, if this coarse salt is purified to get the kind of white snow essence salt in later generations, according to the price of green salt, this catty of salt is more than 200 yuan, then at least there should be no problem in making a fortune."

Thinking of this, Liu Jin's eyes couldn't help but light up.

Although Liu Jin is a scumbag, but at least he is a person who has experienced the formal chemistry education of later generations, and he can understand the truth when he sees this thing, as for refining coarse salt, it is nothing more than that it should be divided into two steps.

One is to remove insoluble impurities, which is relatively simple, crush these coarse salts, crush them into powder, and then remelt them into water, followed by filtration, using filtration methods to remove insoluble impurities.

After such a step, the sediment, shell powder, and other things contained in the coarse salt can be removed.

As for getting rid of soluble impurities, this involves chemical reactions, although Liu Jin is a scumbag, but he also knows some of the most basic and basic things, and he can always find a way to remove these impurities and refine refined salts after several experiments.

"Uncle Montenegro, can you sell me two catties of coarse salt?"

There is a way to make a fortune, and Liu Jin naturally wants to find out as soon as possible.

The situation at home, Liu Jin is too clear, don't look at Liu Jin wearing the clothes of a scholar, there are more than ten acres of land at home, but because of Liu Jin's study, the family is already surrounded by four walls, Liu Jin's mother has to save money every day, and she doesn't even dare to eat more.

What's more, there is also a mortal enemy Tang Laohu, if there is no money, it is difficult to compete with this Tang Tiger at all, only when you have money, can you have more ways to deal with this Tang Tiger.

"What do you say about selling or not, if you want my salt, you can afford me Zhao Heishan."

When Zhao Heishan heard this, he immediately picked up a shovel and filled several catties of salt with a small jar.

"Uncle Montenegro, I only have 10 yuan, you take it first, and I'll make up for it when it's not enough."

Liu Jin naturally wouldn't take Zhao Heishan's things for nothing, and took out 10 yuan from his arms, which was given by Liu Jin's mother Wang before going out, saying that Liu Jin was a scholar, and he could go out without some money, but the family was too poor, so it was only 10 yuan.

"You can see the outside, you can afford to look down on me Zhao Heishan, call me uncle, that's my honor, how can I take your money."

Zhao Heishan looked very angry and said.

Although he is poor, Zhao Heishan is still very good, otherwise he would not have often helped Liu Jin's family before, and now Liu Jin wants his own salt, in his opinion, it is worthy of him Zhao Heishan.

"Uncle Montenegro, you must take this money, if you don't accept it, I won't want this salt, I'll find someone else to buy it."

When Liu Jin saw Zhao Heishan's resignation, he also kept a straight face and stuffed 10 yuan into Zhao Heishan's hand.

The father and son of Zhao Heishan can only cook two pots of salt a day, which adds up to less than 10 catties, and they earn more than a dozen dollars a day by boiling salt.

Boiling salt takes time, consumes firewood, produces very little salt, and the quality is poor, how can I bear to take a few catties of salt from him for nothing.

"Brother Jin, you can take it, my father said, if your family hadn't lent me food at the beginning, I would have starved to death, a few catties of salt is nothing."

Zhao Erhu on the side also said in a humble manner.

"Then your family will also help my family farm every year, and I don't say anything thank you for."

Liu Jin shook his head and said, forced 10 words to Zhao Heishan, picked up the small jar of salt and walked to the beach.

"Let's go, Huzi."

"Let's go to the beach and catch crabs."

As he spoke, he said to Zhao Erhu, who was stunned behind him.

"Okay~"

When Zhao Erhu heard this, he immediately grinned with a big mouth, and wanted to follow Liu Jin to the beach to catch crabs, but he looked at his father Zhao Heishan in fear.

Zhao Heishan looked at Liu Jin, then at Zhao Erhu, and when he looked at the pot that had been refilled with brine, he didn't make a sound to stop it, and suddenly Zhao Erhu was like a wild horse that had escaped, flying to catch up with Liu Jin.

Liu Jin's family and Zhao Erhu's family have a very good relationship, and the two have also played together since childhood, and their favorite thing when they were children was to come to the beach to catch crabs and eat them back.

In this era, there is no pollution, the environment by the sea is very good, the sea water is very blue, very blue, and the waves between the sea and the sky are turbulent, which makes people feel refreshed.

The beach by the sea, the sand is very clean, there are a lot of small animals, crabs are also very common, among which there are many large crabs, which can be seen everywhere, it is easy to catch, and in some rocky places, it is very much.

Unlike later generations, marine fishing is very popular, the fishing nets used are very small, and there are still people in the sea to put cages, nets, etc., once exhausted and fishing, resulting in the depletion of marine fishery resources.

The large yellow croaker and small yellow croaker, which once flooded in the East China Sea, the Yellow Sea and the Bohai Sea, are almost endangered, so that the price is high.

In this ancient time, when no sails could go to the sea, the fishery resources in the ocean were extremely rich, and even when Liu Jin was walking on the beach, he could see dead sea fish washed onto the beach by the sea.

"If you don't use such a treasure house, you just have to stumble on that one-third of an acre of land."

Tired of catching crabs, Liu Jin sat on the reef by the sea, looked at the vast ocean in front of him, and couldn't help but shake his head.

Liu Jin, who crossed over from the later generations, really couldn't figure out why the sea was banned, there were countless fish, shrimp, crabs and so on in this ocean that could be eaten, and they would not starve to the ground if they were caught casually.

There are countless treasures in this ocean, and the profits of the sea trade are very staggering, and if a piece of silk from the Ming Dynasty can be transported to the west, it will be worth as much as gold.

"Damn Zhu Chongba, a small peasant is a small peasant after all, and when he becomes an emperor, the pattern is still very small."