Qin Yu stopped talking nonsense and concentrated on purifying coarse salt.
Shen Binglan and Xiao Nan were helping.
Mineral salt purification can be said to be simple or complex.
To put it bluntly, it is dissolution and recrystallization, and the impurities in the mineral salt are removed through dissolution.
Lift the pot.
Pour water into the pot.
Pour large pieces of mineral salt into the pot.
Then Qin Yu rolled up his sleeves, took a thick rolling pin, and started stirring frantically to fully dissolve the mineral salt.
After the mineral salt is fully dissolved in the water, start filtering the brine through a sieve to remove impurities.
Some impurities visible to the naked eye are stuck on the sieve, making it dark.
Xiao Nan and Shen Binglan were both surprised when they saw Qin Yu's skillful calligraphy.
They didn't expect that Qin Yu could do these jobs quite decently.
Xiao Nan frowned slightly and asked: "Brother-in-law, you...you dissolved all the mineral salt, isn't the salt gone?"
Qin Yu said calmly: "Don't worry, the next step is to extract the salt from this brine. Isn't sea salt also extracted from sea water?"
"yes."
Xiao Nan suddenly realized, "I thought it was complicated, but if it is so simple, why has no one thought of it before?"
Shen Binglan was also confused.
Qin Yu explained: "That's because what is filtered out at one time are all surface impurities, impurities that are insoluble in water, but some impurities are soluble in water and you can't see them with the naked eye."
"So, no matter how you filter it, the crystallized salt is still poisonous, so you need some seasoning."
As he spoke, he poured a bag of ash into the salt water, then continued stirring to prepare for secondary filtration.
Listen to Qin Yu's words.
Shen Binglan and Xiao Nan suddenly realized.
"Brother-in-law, what kind of ash are you pouring in?"
Xiao Nan asked while fanning the flying ash with his hand.
Qin Yu said slowly: "This is plant ash, which can absorb harmful substances dissolved in water, and the salt that crystallizes out is edible salt."
He said, adding plant ash to the brine for secondary filtration.
plant ash?
Hazardous substances?
Shen Binglan and Xiao Nan looked confused when they heard this.
Qin Yu's explanation was truly unheard of and unseen by them.
They thought Qin Yu would use such clever methods.
They really thought it was a magic trick from the gods.
But I didn't expect that just a pot, a bag of plant ash and a sieve could solve the problem.
See Qin Yu busy.
The two of them watched quietly from the sidelines.
After Qin Yu poured the salt water into the large iron pot, he began to add firewood and add fire. As the water vapor evaporated, the salt in the salt water began to slowly crystallize out.
An hour later.
When Xiao Nan and Shen Binglan saw a plate of crystal clear salt blocks that Qin Yu shoveled out from the pot, they were both surprised and couldn't open their mouths from ear to ear.
Qin Yu picked up a small piece and threw it into his mouth. The delicate and pure salty taste swept through his mouth.
He tasted it and pushed the plate in front of the two of them, "Try it too and see how it tastes."
Xiao Nan and Shen Binglan did not hesitate.
Small pieces of salt are chewed in the mouth, without any taste, just the purest saltiness.
But in this era, the purest salty food is very rare.
Even sea salt and salt produced in salt ponds have a mixed taste because there is no filtering method. In addition to salty, there is also a bitter taste.
"How about it?"
Qin Yu looked at the two people and asked.
Xiao Nan grinned, "It's so damn salty, I'm so scared."
Shen Binglan said lightly: "It only tastes salty, but you can't sell the salt at all."
Qin Yu listened and raised the corners of his mouth slightly.
Xiao Nan was stunned for a moment and asked in confusion: "This...why is this? Why can't such good salt be sold?"
Qin Yu smiled calmly, "It's precisely because it's so good that accidents happen easily. Even the official salt is not as high quality as our salt. It would be strange if nothing happens if this is sold."
Xiao Nan suddenly realized, "So that's what I meant. I also said that such a good salt, how can it be worried about sales? It seems that being too good is not a good thing."
After saying that, he looked at Qin Yu and asked: "Brother-in-law, what should we do?"
Qin Yu said lightly: "It doesn't matter, we just need to do the work a little rougher. We can make good salt, but we can't make bad salt?"
"I've thought about it, we'll stop after making enough one million within two months."
Xiao Nan listened with amazement on his face, "One million? Then I can get one hundred thousand taels? How can I spend so much money..."
"If a pound of salt is sold for 300 Wen per pound, then we have to process 3,333,333 pounds of salt. If we want to complete it within two months, we will have to process 55,000 pounds per day.
One thousand five hundred and fifty-five pounds of salt."
"A carriage carries about two thousand kilograms, and it needs to transport twenty-eight carts of coarse salt a day..."
As he said that, he looked at Qin Yu and said, "Brother-in-law, transporting twenty-eight loads of salt a day is a bit much. We'd better transport it at night, otherwise we'll be easily discovered..."
Hear this.
Qin Yu and Shen Binglan both looked at Xiao Nan with shocked expressions.
This guy is actually a math genius.
"You...you can calculate very quickly and accurately..."
Qin Yu looked at Xiao Nan and couldn't help but exclaimed.
Xiao Nan hesitated and said in a daze: "Quickly...fast? It's okay..."
...
Three days later.
Jinling City.
Western suburbs.
Qin Yu, Xiao Nan and Shen Binglan, led by Xiao Jin, came to a barren mountain dozens of miles away on the western outskirts of Jinling City.
Xiao Jin pointed to the mountain he didn't want to leave and said: "My dear prince, there is a cave in that mountain. There are red lumps of salt in it. The salt in the cave is poisonous and cannot be eaten."
As he spoke, he pointed not far away, "There are many salt wells over there, but the brine is poisonous, and the refined salt is inedible."
Qin Yu nodded. As long as there are no people coming to pick it, it proves that there must be something wrong with the salt here.
Otherwise, someone would have dug it long ago.
If you don't eat salt, you won't necessarily die, but if you eat poisonous salt, you won't survive.
"Which family owns this land? I'm going to buy this land from Yaxing. The price shouldn't be high for a land that doesn't even grow much crops."
Qin Yu looked around at the surrounding environment.
The place is secluded, but it's a good place for a workshop.
Xiao Jin responded: "I have already inquired about it. This is the land of the Lu family. When they wanted this land, they came to the salt wells. There were indeed several wells that produced edible salt from brine, so they
Sold all the salt to the imperial court."
"Then for some reason, the brine became more and more poisonous, and the refined salt even killed people. After that, the salt wells were filled up."
"Furthermore, the crops on this land did not grow well, so the Lu family put this land on consignment in Yahang. The price was very low, but no one cared about it. No one wanted to buy a piece of waste land."
"They have already signed the land deed and contract, and the formalities can be completed at Yahang."
Qin Yu couldn't help but sneer, "The Lu family, they are afraid that someone will regret buying it, so this good man will do good and take over this land."
"When the time comes, let that old man Lu Yingcai wait to cry."
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