After the meal, Shi San's heart was also itchy, and he didn't have the heart to deal with the medicinal materials, and wanted to hurry up to see if Chen Hao could succeed.

Under the gaze of three pairs of eyes, the water in the pot finally evaporated under the slow fire!

At the bottom of the pot, there is a small pinch of gray scabs.

Chen Hao felt a little uncertain in his heart, this didn't look like table salt.

He reached out and took a little of the sediment from the bottom of the pot, put it in his mouth and tasted it.

"Brother Hao, how is it?" Ah Yue was the youngest and the most uncontrollable, and asked more nervously than Chen Hao.

Chen Hao frowned, and before Shi San could regret it, he heard him say, "It's salty and astringent." ”

"Is that a success?" Shi San was happy.

As long as it's salty and a little astringent, what does it matter? Ah Yue was also excited: "It's really good, Brother Hao?"

Chen Hao shook his head and said, "This is not enough." ”

In his opinion, this is not considered a success. This thing in the pot can indeed be used as a substitute for salt, and it must contain a lot of salt, but it is still far from the salt used to make money.

If this thing is traded, it is just a concentrated salt dish, and it may be exchanged for three to fifty percent of table salt.

Further purification is needed!

Shi San and Ah Yue were a little disappointed, it seems that if you don't use magic, it is really difficult to do such a thing against the sky.

"One", "Ben" and "Reading" novels YBDU Chen Hao carefully collected the scabs at the bottom of the pot, and it is estimated that there are close to one or two.

Judging from the salinity, he thinks that there should be six or seven percent salt in these residues. But if it is purified again, there must still be some loss, so it is good to be able to get five coins of salt in the end.

And this cost......

Buy three catties of salt vegetables and use one penny.

The recovery of his aura is so slow, and he can't crush it much in a day with dissociation. For the time being, even if this is not considered cost, this factor definitely limits the output.

And how much is the value of the firewood used to burn out the salt? Chen Hao hasn't counted yet.

However, the most important thing at the moment is to first purify these coarse salts with a lot of impurities into lean and clear fine salts!

In the following days, Chen Hao concentrated on the preparation of solvents.

This thing is really hard to make in the White Horse Cave. The chemical agents that Chen Hao knew in his previous life, there are no ready-made ones here.

This solvent requires the ability to dissolve the salt, but also to leave impurities, and after filtration, it can be boiled to obtain fine salt. Moreover, the material with the solvent must be very cheap and very easy to obtain, otherwise it will be meaningless.

Chen Hao tried water, vinegar water, water with plant ash, etc., etc., after hundreds of tests, he finally settled on a solvent formula!

100 parts of water, half of plant ash, and heating to a temperature between hot hands and non-hot hands, will only dissolve the salt and not the impurities of the salted vegetables.

As for what these impurities are and how they work, don't force Chen Hao to explain, because he can't analyze what they are.

"It's not easy!"

Looking at the white and crystal fine salt in front of him, Chen Hao almost burst into tears.

If you don't know the composition of the residue, you can't apply the chemistry of the earth. Besides, Chen Hao's original knowledge of chemistry, I'm afraid there is only a little bit left, and he is not engaged in this major.

This recipe is just a random encounter!

At this time, half a month has passed since the day of the initial test.

Now, it's time to calculate the cost.

"Ah Yue, how much is the firewood needed to boil such a pot of water worth?"

Ah Yue flashed his eyes, looked at Chen Hao, and said, "Brother Hao, how can I ask for your money? ”

"I'm not talking about this...... If I were to sell the firewood that I had to boil all morning, how much would it cost? I need to know how much it would cost to get the salt. Chen Hao could only explain in detail.

"Oh. Come to think of it, I burned about a load of firewood this morning, and this penny of salt can buy two loads, so it's ...... I'm not going to forget it. "Ah Yue has never learned arithmetic, so he can't do division.

"Okay, I got it. Chen Hao nodded, relieving Ah Yue's distress.

Now it is still the experimental amount of three catties of salted vegetables, and about five dollars of refined salt has been obtained.

It takes one dollar to buy salt vegetables, half a penny for firewood, and manual ...... Count it as a penny.

Chen Hao remembered that the one who sold salt vegetables seemed to sell this kind of dish every day. Then he either grows salt vegetables himself, or he buys them from people who specialize in growing salt vegetables.

If you find someone who grows salt vegetables and collect all his vegetables, it should be cheaper.

Labor is not so expensive. Counting the process of purification, it will take a day at most, how can it be possible to give such a high wage? What's more, if you really produce salt in large quantities, how can you cook three catties of salt vegetables a day!

Therefore, the cost of these five dollars of salt is only one and a half dollars at most.

The profits are high!

Although it can't be compared with the money printing machine that Chen Hao originally thought, this is mainly limited by the speed of his aura recovery. Using dissociation to deal with salt vegetables, Chen Hao has never tried to fire with all his strength, how much can he handle when the aura is full.

Almost five times the profit, in short, is worth doing.

In the next step, Chen Hao is ready to contact the producers of salt vegetables.

"The salted vegetables in the vegetable market are all grown by the Wang family, one of the four richest people in Shouwang City. Not only salted vegetables, but half of the other dishes are also produced on his family's estate. Shi San was also happy to see Chen Hao's successful experiment.

Chen Hao said: "Uncle Shi, then you can take me to visit the Wang family." Also, Uncle Shi, this salt is now practiced, no matter how much you make in the end, I will take your share into account. ”

"This ...... How does it work...... This ......" Shi San wanted to refuse, but this is the salt of white flowers!

In the White Horse Cave, when people see this salt, they are afraid that they will see gold and monks see spirit stones, and they all have a kind of temptation from instinct.

This made Shi San really ruthless and directly said the word "no".

Chen Hao laughed and said, "Uncle Shi, these days, Ah Yue didn't go to collect medicine in order to help me light the fire, and I ate at your house and lived in your house, in short, this matter can be successful, and you and Ah Yue have a share of the credit." Besides, you need salt too. ”

Shi San also smiled and said, "Teacher Chen, in fact, I have treated my old injuries these days, and there is no shortage of salt for the time being." ”

As soon as the words came out, I regretted it, and felt that I shouldn't have said that. But how can you say it, so that you can show that you are not so greedy for money, and you can accept Chen Hao's kindness? After all, if Ah Yue can't go to the heavenly realm, he still needs a lot of salt. Shi San is really not that material.

Chen Hao couldn't help but wonder, money, money, let honest people be so embarrassed: "It's okay, you will also use salt in the future." Besides, this thing may not be as lucrative as you think, but I guess it's better than picking medicine. ”

"Oh well. Shi San was cheeky and nodded.