"Beetroot?" Su Lun was slightly stunned, and then asked, "where did you find it, and did you have it?"

"It's on the slope over there. There are many more," bud said, pointing to the slope not far away.

The two came to the earth slope. A large area of lush plants grew on the earth slope, which looked a bit like turnips planted in their hometown in previous generations.

"Sir, that's the beetroot. My mother found it when we were in the giant bear tribe." bud dug out a beetroot and handed it to Suellen.

Reaching for the beetroot, Su Lun shook off the soil on it. The beetroot looked like a short and fat radish. The root tip was west and the skin was red. After cleaning with water, Su Lun cut off a small piece and tasted it. A sweet filled the mouth instantly.

"It's so sweet," Su Lun said in surprise. This beetroot is very sweet, much sweeter than the sugarcane he ate in his previous life.

He was not sure when he drank beet soup just now, but after tasting it himself, he finally determined that these beet roots are beets from previous generations. This kind of beet is widely planted in the north. In addition to being used as vegetables, its biggest function is to squeeze sugar.

Sugar was a luxury jewelry in ancient times, which was much more expensive than salt. At that time, there were not many ways to obtain sugar. Except for some fruits, only sugar was obtained from honey. There are no railways, no cars, no highways and high-speed railways, and fruit is not easy to preserve, so it is not easy to eat fruit.

In southern Kalun City, in addition to some local fruits, there were only some preserved fruits from the desert kingdom, such as Elaeagnus angustifolia and raisins. Of course, there are also white sugar and honey, but the quantity of white sugar is very small and the price is very expensive. These white sugar are shipped from the south, and the quantity is pitifully small every year.

The sugar pressing technology in this era is still very primitive. The sugar extracted from sugarcane in the south is reddish brown, and the amount of white sugar is even less.

Su Lun found sugar beets here. As long as they are planted on a large scale, his territory will produce a large amount of white sugar every year. Although compared with salt, white sugar is not a necessary product or even luxury jewelry, for the nobility, these white sugars are standing goods.

In fact, there is little difference between white sugar and brown sugar, and the sugar content in it is almost the same, but the taste of brown sugar is not as good as that of white sugar, which has some bitterness. Therefore, the prices of brown sugar and white sugar vary greatly, and the nobles can only use white sugar to entertain guests.

If brown sugar is used to entertain guests, it will be laughed at in the whole aristocratic circle if it is spread.

It is said that the white sugar made by the city-state alliance in the south is made with the help of wizards, and most of the white sugar produced in other places is the same, but sulun knows a way to make white sugar with brown sugar. Brown sugar and white sugar are different in color because there are impurities in them. As long as the impurities in brown sugar are removed, brown sugar becomes white sugar.

In this era, human beings have no good way to remove impurities, but sulun knows a simple and effective way to filter out the impurities in brown sugar.

"Go and call everyone and collect the beetroot here," Suellen ordered directly, putting down the beetroot in his hand.

Soon, all the beet roots in this area were collected. These beets had grown here for a long time, and many beets had borne seeds. Sulun also collected all these beet seeds. He was ready to plant beets in a large area in the territory.

After three hours, all the beets on the hillside were finally collected. The whole hillside was potholed. A total of four or five hundred kilograms of beets and a bag of beet seeds were harvested. After collecting the beets, sulun didn't continue to explore and directly took the people back to the town.

As soon as he returned to the town, sulun called several craftsmen to prepare various sugar pressing tools. The sugar squeezing process is not difficult. Under the guidance of sulun, several craftsmen made a sugar squeezing machine without much effort. In fact, the sugar squeezing machine was improved by an oil press.

Wash and cut the beetroot into small pieces and put it into the machine for juicing. With the operation of the machine, after a while, a red juice flows out. These juices contain a lot of sugar. The common preparation method is to filter out the visible impurities and heat the sugar water to obtain sugar.

Let two barbarian warriors turn the machine, the sugar water seeps continuously, and soon a bucket is filled. Suellen dipped his hand in the sugar water and put it in his mouth. It was very sweet.

In this way, only brown sugar is produced. If sulun wants to make white sugar, he must adopt another filtering method.

He is going to use activated carbon filtration. When he was in school in his previous life, he knew that activated carbon is a widely used filtering material, and the filtering effect of this material is very good. But although Su Lun knew that the filtration effect of activated carbon was good, he didn't know how activated carbon was made.

Even when I went to school before, I have forgotten it for so many years. He only remembered that activated carbon was obtained by carbonization of wood. Although he doesn't know how to make activated carbon, he still knows how to make charcoal. Now charcoal is used for steelmaking in the territory every day.

Although charcoal has no better filtering effect than activated carbon, it can also be filtered. It's no big deal to filter it several times. Let people go to the kiln to transport a truck of charcoal, and then let the workers crush the charcoal into fine particles, and then wash these particles with clean water.

One side directed the barbarians to squeeze sugar water, and the other directed others to make charcoal particles.

After washing the charcoal and drying it, Suellen got a pile of small black particles. Next, these black charcoal particles are poured directly into the near red sugar water, and then stirred.

The time to witness the miracle came. I saw that the color of the original reddish brown sugar water became lighter and clearer during the mixing process.

Several barbarians nearby looked at Su Lun's operation foolishly. They couldn't understand why the sugar water became transparent after adding those dark things to the brown sugar water.

Seeing that the sugar water became transparent, Su Lun couldn't help giggling. It seemed that his method had succeeded.

"Work quickly, don't steal!" while sulun giggled, the two barbarians slipped into the bucket, scooped a spoonful of sugar water, and then drank it quickly. Suellen took the spoon and pointed it at their heads twice.

The two barbarians gave a silly smile and went on working.

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