Chapter 19                                                             �

"How is this possible! There are so many impurities in the mineral salt and are very toxic. If edible salt could be purified, those nobles of the aristocrats would have done this long ago!"

Fang Xuanling said in a deep voice.

"Son-in-law, you must not joke about this matter. Don't say that this matter is impossible. Even if you can really purify mineral salt, are you sure?

What if it is not purified and eaten to death?”

Li Shimin said in a deep voice.

If only one or two people died because of mineral salt, Li Shimin could still protect Xu Tian from nothing, but if a large number of people died because of mineral salt, he had to give an explanation to the people of the world. Those who waited for Xu Tian would be searching the house and extermination of the clan.

"Don't worry, my method of purification is very safe. If my father-in-law doesn't believe it, I can personally demonstrate it to my father-in-law!"

Xu Tian said in a deep voice.

"This... since you are so confident, then Father will watch you demonstrate, but if there is any mistake, Father will never let you interfere in this salt business."

Li Shimin said in a deep voice.

Since Xu Tian did not give up, let Xu Tian give it a try. If there were any mistakes in the method of purifying salt, he pointed out directly that Xu Tian would have nothing to say.

"Old Cheng! Please go to the salt mountain and bring back a piece of mineral salt, which will be bigger!"

Xu Tian said in a deep voice.

Cheng Yaojin was speechless. You discussed here for a long time, but I didn’t say anything. As a result, the coolie job fell on me!

However, Li Shimin gave him a wink. Cheng Yaojin didn't say much, so he took a few people out and came to the salt mountain. He picked up a piece of mineral salt of three or four hundred kilograms, put it in a carriage and took it back.

"Honor! The salt is brought back!"

Cheng Yaojin parked the carriage in the yard and said in a deep voice.

When Li Shimin saw the carriage full of black mineral salt, he frowned. Such salt was inedible at first glance. No matter how Xu Tian purified it, the people would not accept it.

"Yes, it's not a problem to purify ten kilograms of refined salt for such a large piece of mineral salt. It's enough for me to eat it for a while."

Xu Tian looked at Mining Yan and said with a smile.

Li Shimin, Fang Xuanling, Cheng Yaojin and others stood aside and watched. Xu Tian found a big iron pot, and then found a large piece of gauze, sand, stone and other tools.

These can be used to filter impurities in ore salts. After steaming, evaporating, crystallization and other processes, refined salt can be extracted.

"Son-in-law, is the method of purification you mentioned to use these things?"

Li Shimin asked.

He thought that Xu Tian had some special means to purify mineral salt. Who knew that what people used was all about the things that people could come into contact with in their daily lives. If these things could purify mineral salt, who would buy salt and go directly to the mountain to pull mineral salt to purify it?

"Father-in-law, don't underestimate these things. As long as you use them well, they will be of great use."

Xu Tian said with a smile.

After a while of his work, the originally three or four hundred kilograms of mineral salt was crushed and melted into liquid by him. He filtered it several times with gauze, sand, stones, etc., and finally turned into a large pot of liquid, much purer than before.

Xu Tian kept adding water to it, and then stirred it with a wooden stick. This process took a long time. As long as the water was slowly evaporated, crystal white particles appeared.

Xu Tian continued to stir, and after another half an hour, the moisture in the iron pot was completely evaporated, and the pot was covered with a layer of white crystal particles.

Xu Tian took a shovel, scraped off the white particles, put them all in a large wooden basin, and roughly estimated that it was about fifteen kilograms.

"Father-in-law, this is the salt I purified. I named it fine salt. However, this can only be regarded as a semi-finished product. It needs to be grounded before it can be considered completely completed."

Xu Tian said in a deep voice.

Li Shimin grabbed a handful of fine salt. Although it had not been ground, the particles of the salt were not large and could barely be called fine salt.

Moreover, judging from the color of this salt, it is whiter and brighter than clear salt. Does this mean that it is purer than clear salt?

Li Shimin looked at Li Chunfeng beside him. He once said that Xu Tian was his uncle, so he had become a disciple of his classmates. The magician had such a method, and Li Chunfeng should know something.

"Ahem! The head of the family, the salt looks clear, but, after all, it was extracted from mineral salt. Who can know whether it was extracted? "

When Li Chunfeng saw Li Shimin looking at him, he coughed twice and said.

Xu Tian was on the side and couldn't bear to see it anymore. He grabbed a handful of salt and stuffed it into Li Chunfeng's mouth, then covered his mouth and forced him to swallow it.

Li Chunfeng covered his neck and coughed hard, trying to spit out the salt. After struggling for a while, he spit out some salt particles.

Li Chunfeng stood there in a daze. Although his face was a little rosy, he did not feel anything strange. Instead, he licked his lips, feeling that the salt tasted very good just now.

"Well! This fine salt melts in your mouth, has no impurities, no bitterness, and it tastes great. I now have nothing abnormal except for feeling thirst."

Li Chunfeng said in shock.

"Nonsense, it would be strange if you don't have thirst after eating such a big mouthful of salt!"

Xu Tian said speechlessly.

Li Chunfeng smiled awkwardly and said, "The head of the family, after the villain tried it just now, it was completely confirmed that this refined salt is non-toxic and edible! Moreover, the taste is better than clear salt!"

Hearing what Li Chunfeng said, Li Shimin also wanted to taste the taste of salt. Fang Xuanling, who was beside him, hurriedly said: "Head of the family, no! Let me give it a try first."

After saying that, Fang Xuanling snatched the salt from Li Shimin and put it in his mouth. As Li Chunfeng said, it melted in his mouth, without any bitterness.

Fang Xuanling carefully savored it for a while and said in a deep voice: "Head of the family, I can also confirm that the fine salt is non-toxic and can be eaten, and it is definitely purer than the clear salt!"

Hearing Fang Xuanling said this, Li Shimin stopped hesitating, grabbed a handful of salt and put it in his mouth. The next moment, his eyes widened!

As the Emperor of the Tang Dynasty, he usually eats the best clean salt, but the taste is incomparable to the fine salt!

"Father-in-law, how about it?

The salt I refined tastes better than the best clean salt, right?”

Xu Tian said with a smile.

"Son-in-law, you sell 30 cents per pound of fine salt, it is too cheap for you to sell 30 cents per pound! I suggest you sell 30,000 cents per pound directly, and there is still a shortage of supply!"

Li Shimin said in a deep voice.

He thought that even if the salt purified by Xu Tian was edible, the taste would not be better than that of clear salt. Who knew that the taste was so good that he could not imagine it!
Chapter completed!