"No, it's still not." Song Yi spit out bitter water, and the freshly boiled salt was still not good.

In order to prepare this sweetness, Song Yi has been refining coarse salt all night, although the salt has become thinner, the taste is still very poor, and there are still too many impurities.

"Add a few more layers of gauze, fill it with charcoal, and try again." Song Yi took the simple filter he made and instructed Liu Datong on the side.

Song Yi is around, and Liu Datong can trust and call.

Liu Datong didn't complain, he was almost numb all night, but at the same time, he also saw Song Yi's progress, refined salt, it seems that he can really get it.

……

"Still no, this quality is not enough." Song Yi tasted the freshly boiled salt again, and the taste was slightly better, but not enough.

Liu Datong was a little broken, and said hesitantly: "It's not enough? ”

Song Yi didn't reply, silently added firewood, and added a few layers of gauze to the simple filter.

Liu Datong didn't talk anymore, he picked up two catties of coarse salt, poured it into the grinding dish, little by little, and mashed it.

……

"It's salty." Liu Datong looked at the salt that slowly emerged and said, the graininess was still obvious.

Song Yi just replied calmly: "It's down, I'll think about it again." ”

Over and over again, Song Yi could see that the quality of salt was improving.

Step by step, he felt that he could always get it, but time waited for no one, he had to fool Zhang Xingwang first.

Pick up the filter at hand, it is nothing more than a bamboo tube, the bottom is opened and pierced, the gauze is spread, then filled with charcoal, and then the gauze is constantly spread.

The device is still too watty, but Song Yi remembers this simple thing, how can he be advanced.

Liu Datong stood silently aside, and didn't know how to speak, "Ah Yi, I know you're in a hurry, but don't worry about it first." ”

"Do you want to hear what you're talking about?" Song Yi shook his head helplessly and said with a wry smile.

Looking at Liu Datong's tired figure, he also knew that the eldest brother was about to lose his bearing, and now he was hanging with that strength.

But it's really difficult for a clever woman to cook without rice, and the only bit of chemical knowledge in Song Yi's mind has long been squeezed dry.

Song Yi was a little crazy, but when he raised his head and looked at the hazy rising daylight, his impetuous heart suddenly settled down again.

"I can only gamble." The fluttering thoughts reminded him of the countless days of fighting all night.

It's as if the familiar feeling has returned.

Song Yi vaguely remembered that a not very "scientific" purification method came from China on the tip of the tongue, which belonged to the well salt mining method of Zigong, Sichuan, because Song Yi brushed it many times, and he remembered it relatively clearly.

The key point of this method is to grind soybeans into soy milk and boil them in hot brine to absorb heavy metals in coarse salt.

"Big brother, go buy two catties of coarse salt, two catties of soybeans, and ask for well salt, preferably from Sichuan." Song Yi felt that he had to give it a go, in case the bicycle became a motorcycle.

Song Yi shouted from afar again, "By the way, I will buy two taels of green salt and come back." ”

It's also a plan B, hoping to fool the "simple" Xingwang brother.

He himself was not idle, silently setting up a fire.

After a while, Liu Datong came panting.

Looking at the tired figure in front of him, Song Yi said with relief, "This is the last time." ”

Raise your hand to take the soybeans, put them in the stone mill, and grind the soy milk little by little.

On the other side, he instructed Liu Datong to put the prepared brine into the pot and boil.

After the soy milk is grinded, the brine has already boiled, and then add the soy milk little by little.

The two silently gathered in front of the pot, their eyes staring at each other.

At first, there was no reaction, but soon, some yellowish-white foam began to appear on the boiling brine, and then these foams became more and more, and soon formed a large patch on the surface.

"It's useful, it's useful, CCTV dad doesn't deceive me."

Seeing this scene in front of him, Song Yi couldn't help but be a little excited, and looked at it blankly for a while.

"Ah Yi, don't you need to skim off these foams?" Liu Datong asked suspiciously.

"Ah yes, yes, skimm, skim off, it's all impurities." Hurriedly picked up the spoon and skimmed out the foam little by little.

The two skimmed for a few minutes before there was gradually no foam in the pot, and Song Yi added some soy milk, but there was still no foam.

This shows that the impurities have almost been removed, and the originally turbid brine has gradually become clearer.

This made Song Yi feel a little more confident, and his frowning brows gradually relaxed.

Slowly, the water in it was boiling less and less, and Song Yi gradually reduced the fire.

The pot used by Song Yi is a small pot, the brine is not much, and it burns quickly.

After a while, the brine stopped tumbling and was probably about to start crystallizing.

The two of them took a few steps forward in unison, leaning against the pot, but no one spoke, they all stared at it.

When only the middle part of the brine remains, layers of snow-white grains begin to form all around.

Liu Datong couldn't bear to speak, "Salt, salt." ”

Song Yi didn't care about the heat, picked up a spatula and scooped up some grains, and tasted it.

As a result, the freshly precipitated salt was scalded, and the taste didn't come out.

But it does have a lot of salt flavor, and the quality looks good.

"Big brother, try it again, pay attention to the heat." Song Yi turned to Liu Datong and said.

Liu Datong picked off a little bit, blew on the air, his eyes were like copper bells, and he observed carefully: "It's so white, it's so fine, and it tastes good." ”

Then he took a sip and enjoyed it.

The two of them put out the salt together, and it was just more than two or two.

"Go and bring the two taels of green salt." Song Yi said.

took the green salt that Liu Datong took, grabbed a handful, and compared it.

The refined salt is in better condition, and after gently rubbing it, the refined salt is also more delicate than the green salt.

In terms of taste, Liu Datong still tasted it, and the taste was two or three times better than green salt.

"It's enough, but I don't know if this sweetness is good or not." Song Yi said with a smile.

It was this familiar smile again, and Liu Datong silently felt sorry for someone for three seconds.

"Are we going to sell this salt?" Liu Datong asked.

Song Yi glanced at him and said softly: "Da Ming Law": Anyone who commits illegal salt will be punished with a hundred rods and three years in prison; Do you miss your prison bed? ”

Liu Datong said disappointedly: Then what are we going to do with this effort to refine salt. ”

"Stupid, we can't sell it, but someone can, I understand the big brother, there is a reason why Xiucai has not been successful for so many years." Song Yi said with emotion.

Liu Datong was a little speechless, since the virtuous brother came out of prison, he has become more and more poisonous, and he must have learned from others badly, harmful.

No longer bothered with Liu Datong, Song Yi said that it was the right thing to run first and go back to the house to make up for sleep.

Wake up and take a shower and change your clothes.

You can prepare, go to slaughter... Pick-up!

……

。