At noon on the second day, the father and son of the old man came to Xu He's house with a bag on their backs.

When more than thirty catties of brown sugar were placed in front of Xu He, Xu He also rubbed his hands a little excitedly.

To be honest, in his previous life, except for cooking brown sugar water for his wife, he rarely touched this thing.

Who would have thought that in this life, he would have to make a fortune with this thing and grab the first pot of gold in his life?

"Little crane, what now?" The old Jiachang father and son looked at Xu He with blank eyes.

Speaking of this, Xu He is too confident.

He first asked Xu Peng to go home and find the wooden funnel used to make rice wine during the Chinese New Year, and then pulled a bundle of straw from the side of the stove to clean it and plug the bottom of the funnel.

After doing this step, he asked Xu Peng to make a fire, pour brown sugar into the pot and add water to boil.

Seeing this, the old armor chief said unconsciously: "Little crane, I see that you are doing a good job, it seems that you really understand!" ”

Xu He smiled: "Of course, uncle, you can see it!" ”

In fact, the method of extracting white sugar from brown sugar on "Tiangong Kaiwu" is very simple, that is, plugging the funnel with straw, and then putting the boiled syrup into the funnel, and then using diluted yellow mud water to attach away the impurities in the brown sugar, and the result is white sugar.

Here, while Xu He was boiling brown sugar, he asked the old Jiachang to go outside to get some yellow mud and come back.

When the brown sugar boiled into a paste, the old man came back covered in mud, carrying a pass of yellow muddy water in his hand, and his mood was also excited.

Xu He immediately scooped out the brown sugar paste with a spatula and put it into the funnel, and at this time, Xu Peng also came close to watch this exciting scene.

"Witness the miracle!" Xu He poured the yellow muddy water into the funnel with a red face.

Lao Jia's face was a little distorted when he saw this scene, and he used up five catties of brown sugar just now, which was a full two taels of silver, and he was submerged in yellow mud water in a blink of an eye, and his heart was ...... It hurts a little.

I saw that the brown sugar paste slowly floated in the funnel because of the buoyancy of the yellow muddy water.

At this moment, time seemed to stand still, and there was no movement under the funnel.

Finally, a "tick" came into Xu He's ears, Xu He looked at the bottom of the funnel in surprise, and sure enough, the drop of water that fell in the basin exploded black in the basin, forming small black dots.

Xu He secretly clenched his fists, and in the next second, it was another drop, and then there were more and more water droplets on the straw at the mouth of the funnel.

Lao Jia patted his thigh: "I know, this black water is the impurities in the brown sugar, and it was taken away by the yellow muddy water!" ”

Xu He didn't pretend anymore, and laughed: "That's right, yellow mud water has adsorption and can take away brown sugar impurities." ”

The father and son of the old armor chief seemed to have learned some great secret, and they were excited.

The yellow muddy water, just under the gaze of the three people, the water level gradually decreased, and finally, there was still a shallow amount left in the funnel.

"Come on, my sugar, no, my silver is going to come out of the water!" Xu He shouted in his heart.

But after a few minutes, all three of them were stupid.

I saw a yellow thing hanging on the straw of the funnel.

"This ......"

"What's going on?"

"Where's the sugar?"

Xu He was stupid, and the old armor chief and Xu Peng were also stupid.

Said good sugar, said good adsorption, how is the thing that comes out is a yellow lump full of straw powder!

At this moment, Lao Jia grew up disappointed, and sighed while shaking his head: "Little Crane, this is two taels of silver, it's so bad, this stall is packed up and fed to the pigs, tomorrow I will take the remaining brown sugar back to the city and return it!" ”

"Something is wrong, what's wrong, it's impossible to deceive people in the book of black technology at the end of the Ming Dynasty, right? What went wrong? Xu He's head was faintly oozing with sweat.

"Do you need to filter it a few more times?" Xu He suddenly had a flash of inspiration.

He hurriedly took a new basin and placed it under the funnel, and poured the freshly filtered water into the funnel.

Seeing this scene, the father and son of the old armor elder also guessed Xu He's intentions, and their eyes couldn't help but rise with hope again.

But liberal arts students are liberal arts students in the end, and the simplest sugar refining in the cheats of crossing to get rich can also be messed up.

I saw that the sugar paste had obviously shrunk to one-third of its size after secondary filtration, and it was still yellow and clear.

Xu Peng dipped his hand in some yellow mud water and put it in his mouth, and after a while, he said to Xu He with a sad face: "Little Crane, let's not try it, the yellow mud soup below has become sweet!" ”

Dumbfounded!!!!

"How confident you are just now, how much social death you have at this time, let's embarrass the traverser."

The three of them were busy for a long time, and the Xie family didn't even have a place to cook, so they could only go to Lao Jiachang's house and bring it over for the third grandfather to eat.

But after working for a long time, I didn't see the sugar, but the yellow mud sweet water will be cheaper tomorrow than the second senior brother.

Just as Xu He was about to give up, he suddenly saw charcoal stacked in a corner of the kitchen.

This charcoal was bought for him to warm up in the winter, when Xie was afraid that his son would be cold when he was studying at night.

At this point, there are still a few left, most of them are charcoal.

Xu He's eyes suddenly lit up, if you want to say that the thing with the best adsorption, the yellow mud soup is afraid that it can't be compared with charcoal powder, if the yellow mud soup is replaced with charcoal......

Thinking of this, he hurriedly pulled Xu Peng up and asked him to go to the fire again.

Seeing that he was still going to toss, the old armor leader hurriedly protected the remaining brown sugar: "Xiaohe, don't toss, if the white sugar is so easy to make, people would have used it to make money, and it would be our turn?" ”

Xu He shook his head: "Uncle, let me try again!" ”

Seeing that he was resolute, the old man had no choice but to take out two catties of brown sugar and hand it to Xu He: "The last time, Uncle can't see you waste money!" If not, I'll help you get it back, and you can study hard with this money! ”

Xu He is helpless, is this a credit value that has been used up? I don't trust it!

It's still the same step, but this time Xu He put the boiled sugar paste into the basin, added water, took charcoal from the corner of the wall, crushed it and sprinkled it into the basin.

The three of them stared at the tub again.

After about half an hour, the eyes of the three of them were sour, and finally, Xu He asked Xie to help find a new bamboo fence, and covered the head of a gauze cloth on the fence.

Here, Xu Peng followed Xu He's instructions to lift the wooden basin, pour the black water inside into the fence, and then flow into the wooden basin below.

At this time, the water flowing into the wooden basin below was noticeably clearer, only slightly yellow, and the gauze of the fence was full of charcoal and impurities of melted brown sugar.

Looking at the yellowish and clear water in the wooden basin below, the old armor chief was a little confused: "Little crane, is this done or not?" ”

Xu He shook his head and poured the basin of water into the pot again.

Seeing this, Xu Peng consciously ran to light the fire.

As the pot boils, the water vapor rises, and there is less and less water in the pot.

Suddenly, the old armor commander exclaimed: "White sugar! ”

Xu He looked in the direction of his finger when he heard this, and sure enough, he saw that as the water level in the pot dropped, a layer of white lens formed around the pot.

Xu He couldn't wait to pick up the chopsticks and scrape a little and put them in his mouth.

At that moment, the sweet taste entered my heart.

It's finally done!