Looking at her aggrieved little appearance, Lin Xiaoxi's heart softened suddenly, and she reached out and touched her head.

I found that I don't know when, the little girl's yellow hair not only began to become black and shiny, but also soft and shiny, combing two little knots, very cute.

"Then Sanxi and the fourth uncle go to play with Sister Xiaoyu?"

Sanxi was a little moved, but when he thought of that, he shook his head in fear with a punch that knocked the big tree out of a hole.

She hadn't been playing with Pai Pai for a long time since Ershi came......

Lin Xiaoxi saw her like that, and knew what she was thinking, "Don't worry, Ershi is much better now, as long as you don't get too close, Ershi won't hurt you." ”

As he spoke, he motioned for her to look at the small stove in his hand, "Sister Xiao Yu said that she wanted to make salt, aren't you curious?" ”

Sanxi's eyes lit up, and even the fourth uncle said that it was okay, then it must be fine!

Just as he was about to say yes, Dagui had already left Gorou, who was still meditating, and ran away.

The flower rope can be turned at any time, but I have never seen salt making!

Of course, I have to go to see Sister Xiao Yu making salt!

There are obviously not a few people who think like this, and immediately after, Gorou also chased after him.

Sanxi was so anxious that he stomped his feet.

Obviously, the fourth uncle came to see her first, and they played Laipi!!

Seeing that his friends had run away, Sanxi couldn't care about being angry, and hurriedly stood up.

skillfully reached out and hugged Lin Xiaoxi's neck, urging: "Fourth uncle, go quickly, go quickly, I want to occupy a good position!" They can't be preempted! ”

Lin Xiaoxi grabbed the stove that was placed aside with one hand, scooped up Sanxi with the other, and responded with a hearty smile: "Don't worry!" The best location must be for our family Sanxi! ”

Jiang Yu heard the movement behind him, and said without looking back: "Put the stove on the shelf." ”

Lin Xiaoxi put down Sanxi and set up the stove with his hands and feet.

As soon as Sanxi stood firm, he grimaced at Dagui and the others who were still behind.

Hmph, how can you little short-legged outrun the fourth uncle!

She was the first to arrive!

This excitement disappeared in an instant when she turned her head to see Ershi and Pai Pai standing on the side.

Sneaking a glance at Ershi, Sanxi shrunk his neck, and then cautiously stepped forward.

It wasn't until he stood by Jiang Yu's side that Ershi didn't react, and Sanxi breathed a sigh of relief and looked at the bucket in front of Jiang Yu curiously.

Jiang Yu sighed in his heart while stirring the solution in the bucket.

It's really like a mountain apart, some things are easy to think about, but difficult to do.

Originally, she thought that the salt was dried from the seawater, so as long as the seawater was heated, the coarse salt could be precipitated, and then purified to obtain refined salt.

It's just that when she redeemed the technical information about salt making in the knowledge mall.

I feel like I'm too naïve!

Making salt looks simple, but it's actually not that easy.

Take, for example, that she wanted to make salt by steaming at the beginning.

Theoretically, no problem.

Table salt is actually sodium chloride.

The principle of making salt from seawater, simply put, is to evaporate the excess water in seawater to obtain a saturated sodium chloride solution.

Then continue to heat, you can precipitate sodium chloride crystals, that is, table salt.

However, the salt content of seawater is not as high as we think, almost one-tenth of the saturated sodium chloride solution, and it also contains a variety of impurities.

In other words, when you boil a pot of seawater, you have to evaporate ninety percent of the water, and the salt will begin to precipitate.

How much charcoal does it take, and how long does it take?

And it can only get coarse salt containing impurities, and the coarse salt that comes out of this way tastes bitter, and there is still a big gap between the refined salt that Jiang Yu wants.

As a qualified foodie, how can you wronged yourself when you have the conditions!

Since you want to do it, you naturally want to make refined salt with high purity!

So after thinking about it again, Jiang Yu decided to skip the step of extracting coarse salt and purify it directly!

In Jiang Yao's words, it is lazy!

Jiang Yu, who was lazy, bought some coarse salt directly from the mall, preparing to obtain refined salt by purifying it.

As for why not just buy refined salt?

Well, naturally, it's because coarse salt is cheap!

The production technique of refined salt should not be available in this era, and the price is ten times that of coarse salt!

You can purify it yourself, and of course choose to save that lot of money!

Well, it's also the most important reason.

Boasting out of Haikou, you can't slap your face......

Think about what she swore to Aunt Sun yesterday?

Hehe, dig the pit yourself, fill it yourself.

Not only to fill in, but also not to fill in vain! After a while, she will have to find Aunt Sun to witness the miracle!

……

Looking at the bucket in front of Jiang Yu, the curious Sanxi forgot to be afraid, "Sister Xiao Yu, what is this?" ”

Jiang Yu said while stirring: "This is the water that will be used to make salt later." ”

"And where did this water come from?"

"Extracted from seawater."

Of course not!

This is a solution of distilled water mixed with coarse salt.

At this point, the coarse salt at the bottom is no longer melting, indicating that it is saturated.

With all the preparations done, it's time to gather the audience!

……

A group of people surrounded Jiang Yu and watched her toss all the way, and then slowly salt flowers precipitated.

"Look at it, it's really burned out......"

Mrs. Sun looked surprised, her eyes lit up, this is salt! It's expensive!

Can you make it yourself? It doesn't look that difficult......

If you can make your own salt, wouldn't it be able to sell it for a lot of money?!

If Jiang Yao knew what she thought, she would probably tell her that it was illegal to sell illicit salt.

But now, Mrs. Sun didn't know anything about it, looking at the salt grains that had just come out of the pot, she was eager to try, "Xiao Yu, is this really salt?" Can I try some of it? ”

Jiang Yu focused on the movements in his hands, and said without raising his head: "Not yet, when it's done, give everyone a taste." ”

Although everyone looked at the more and more grains and didn't understand the difference between the salt they ate on weekdays, since Xiao Yu said so, it was better to wait patiently......

Until, Jiang Yu poured a pot of saturated sodium chloride solution on the salt grains that were finally precipitated......

The crowd couldn't help but want to stop it.

"Wait, Xiao Yu, what are you doing here?!"

"Don't worry, just wait and see." As he spoke, Jiang Yu decisively poured the solution on it.

Then, in the midst of an exclamation, everyone realized that the salt grains had not melted as expected.

"Huh?"

"Xiao Yu, this is ...... What spells? ”

Jiang Yu smiled: "No. This is actually the process of drenching brine, but how to explain it to them......

It's not that you can't fool around, but ...... Jiang Yu looked at the group of children who were watching, this is the flower of the future.

So, in the spirit of cultivating children's inquiry into the truth.

Jiang Yu took the time to do an experiment for them......