I was engaged in infrastructure construction in the Han Dynasty [Transmigration Book]

After Liu Tan traveled to this world, he never stopped eating oil, so he has always ignored the most basic things like soybean oil.

If Huo Guang hadn't been worried about the food structure in the northern border country, he might not have thought of this thing.

The food structure is a very serious issue, especially now that transportation is inconvenient. It takes a lot of money to buy food from other places, but their soybeans may not be bought by others. After this, the basic livelihood of the people in the northern border country still has to be Not resolved.

Therefore, we can only study one by-product, and then increase the value of soybeans by selling this by-product. After the value of soybeans increases, there will not be a big difference in the price of "importing" food from other places, and soybeans from the northern border country also have sales direction.

Nothing works better than soybean oil.

Most of the current oils are meat oil, that is, animal oil, and among animal oils, only poultry such as chickens and ducks, more precisely, chickens have the highest conversion rate.

Whether it is now or in future generations, if you feed the same feed, you will always get more meat and oil from chickens. Although pigs and cattle look huge, their conversion rate is actually much lower than that of chickens, especially now that they are all fed with grains. Feeding, pigs need much more time to grow than chickens.

So here comes the problem again. Food is also needed to feed chickens. In many places, even food and clothing are a problem. Naturally, chicken and chicken fat are also unaffordable.

The existence of soybean oil is to allow those who can't afford chicken oil to get some oily smell. From this point of view, the prospect of soybean oil is quite broad, and it is not comparable to glass.

It can't even compare with coal. After all, coal can be used in some places, but oil is indispensable.

Of course, the premise of all this is that he can produce soybean oil.

Except for Liu Tan, no one would think that soybeans contain oil, so he didn't say anything in advance, for fear that others would think he was crazy, so he could only squat in his study and remember how to extract soybean oil.

Yes, in memory, I think Liu Tan was also the one who witnessed the oil extraction process with his own eyes.

At that time, he was still young, and every year when he went to his hometown in the countryside, he could see oil mills squeezing and selling oil.

The method of extracting oil in the countryside must not be so scientific, and the oil yield is not very high, but it is the most suitable for the present.

After all, even if Liu Tan knew more advanced oil extraction methods, he might not be able to do it due to lack of materials or machines.

Liu Tan went through all the current affairs before engaging in soybean oil. Well, Lin Xiu was watching over the spring plowing, Xu Lin was in charge of the lake and canal digging, and Huo Guang was watching over Tongda City. It seemed...he was temporarily absent from work. No problem either.

In fact, if Liu Tan didn't come up with so many things, the court operation of the entire northern border country should be similar to that of Yan country.

Maybe it's smoother than Yan Guo, after all, Liu Tan doesn't hold back.

Liu Tan ordered the people below to prepare the soybeans and choose the best quality among them, then boil them in water, take out the cooked beans and steam them in a steamer for half an hour, then spread the cooked soybeans on the Put it on the bamboo skimmer to ferment in a hot and humid environment.

Originally, the place for fermentation was not easy to find. Firstly, the climate was dry, and secondly, the temperature was still a bit low. Liu Tan thought for a while and wanted to have the soybeans put in the greenhouse for fermentation.

After fermenting for one to two days, wash it with clean water, then soak it in hot water for several times, and finally put it in a pot to boil on high heat, and then boil it on low heat.

Finally, the juice inside is boiled into a thick shape, which is soybean oil.

Liu Tan led people to toss in the back kitchen for several days. Huo Guang couldn't see anyone every time he came, and finally saw Liu Tan on the fifth day and said helplessly: "Your Majesty will come after the summer solstice, at least four months away." Why does Your Highness have to start making preparations so early?"

Liu Tan was stunned for a moment: "What preparations?"

Huo Guang put the documents that needed his seal on the desk and asked, "Aren't you preparing special dishes for His Majesty's arrival?"

Liu Tan felt ashamed when he heard this. When Liu Che came here before, he didn't come up with any new dishes, but at least there was Longevity Palace that time. This time... it might be difficult to play tricks. Work needs to be done elsewhere.

He coughed lightly: "No, put this aside for now, I've been busy with other things these two days."

After Liu Tan finished speaking, he turned to Miao Rui and said, "Go to the kitchen and bring over a bowl of what you made earlier."

Huo Guang originally wanted to wait for Liu Tan to sign and leave, but when he heard this sentence, he immediately sat there as firm as Mount Tai.

Among other things, the food made by Liu Tan is really delicious, even Huo Guang, the person who came to taste it, would be willing.

Not long after, a little eunuch came in cautiously holding a bowl, Liu Tan waved to Huo Guang and said, "Come, come and have a look."

Huo Guang could smell a smell from a distance. He had never smelled that kind of smell before. It was a bit like the smell of grease, but it was not the same.

He got up and went to Liu Tan's side, and what he saw was a bowl of dark yellow translucent thick liquid.

Huo Guang frowned slightly and asked, "Is this... oil?"

Liu Tan ordered some bowls and said, "Guess what this is made of?"

Huo Guang pondered for a while and said in confusion, "Could it be the man-made oil accidentally discovered by His Highness?"

Um?Artificial oil?

Liu Tan was stunned for a moment, and then remembered that he had made it accidentally before. He shook his head and said, "It's not that, it's also a good thing, but it's not easy to make."

At least it must not consume human life. If you are not careful in the current way, you will have to wipe out a wave, even if you are indifferent. From the perspective of profit, these people will have to pay funeral expenses and pensions after they die, and they will have to find someone to replace them After all, he paid a lot of money inside and out!

This was too uneconomical, so he put the matter aside.

When Huo Guang heard that it was not artificial oil, he hesitated for a moment, stretched out his index finger and tapped it lightly, put it in his mouth and tasted it, it was indeed different from the oils he usually eats.

If you taste it carefully, there is still a beany smell.

Huo Guang looked at Liu Tan with some doubts and asked, "Your Highness... why does this smell like beans?"

Liu Tan clapped the case and said, "It's made of soybeans!"

Huo Guang looked at Liu Tan calmly: "Your Highness, don't lie to me, how do you get oil from soybeans?"

Liu Tan raised his chin slightly and said, "Don't you believe it? This recipe is very simple, just follow what I said, and I'm sure you can make it."

As he spoke, he took out a piece of paper and handed it to Huo Guang.

In the end, Huo Guang turned the paper upside down on the desk without even looking at it, took a deep breath and said, "If this is true, Your Highness will know that this paper is more expensive than gold."

Liu Tan leaned on the voucher and yawned and said, "I know, I still have other things that I haven't brought out."

He pointed the paper with his index finger and asked, "Is this a way out?"

Huo Guang knew a lot more about the price of people's livelihood than Liu Tan. After quick calculations in his mind, as long as the method was not difficult, soybean oil would definitely be much cheaper than chicken oil.

Huo Guang gasped suddenly: "This is not only the way out for the northern border country, it is the way out for the people of the great Han people."

The whole Han Dynasty is not only suitable for growing soybeans in the northern border country, but because yellow rice is the main food, yellow rice is grown. Once soybean oil comes out, these places will not be trapped by yellow rice in the future, and even... If the benefits of soybeans are better than those of yellow rice If it's taller...

Huo Guang thought a lot for a moment, his expression gradually became serious, thinking about how to promote such a thing.

However, so far this recipe is still in Liu Tan's hands, and it is still necessary to prevent the recipe from leaking.

Huo Guang said: "Your Highness, don't let this news out, let me think about it."

Liu Tan said: "Don't worry about it, I still have a series of other things. Take a look at this, I wrote it before."

After Huo Guang took it over, he found that it was a picture. No, it seems that it is not very accurate to say that it is a picture. Let's combine the picture with the text.

If Huo Guang knew what a mind map is, then he would be able to understand what method Liu Tan used.

Liu Tan wrote the words soybean economic revitalization plan at the top, and Huo Guang couldn't help but twitch his forehead when he saw it.

Below these words are vertical lines side by side. The first line is soybean oil, and the second line is other soy products.

Among them, there is a blank space under soybean oil, while under other soybean products there is a word of bean dregs, and the noun of bean dregs is extended to the left with the word feed.

Huo Guang was confused and understood something vaguely, but he still asked, "Your Highness, what does this mean?"

Liu Tan explained in detail: "This is very simple. In addition to a part of the soybeans we grow here, part of it is used to make soybean oil, and then part is used to make other soy products, such as tofu, bean curd, bean curd, etc. Chips, bean curd sticks and the like, when making these soy products, there will inevitably be such things as bean dregs, and bean dregs are good for making feed. Use these feeds to raise chickens or other poultry or even pigs. During the process, some excrement will inevitably be produced, and these excrement can also improve the land environment and make the quality of the soybeans grown better."

Liu Tan explained while doodling, and finally drew a closed circle and said, "Doesn't this look great?"

Huo Guang looked at the picture, and it was undeniable that he was very excited at this moment. Every step in it was clear and logical, and there was a reason to follow. As long as he followed this route, he felt that the revitalization of the northern border country was indeed in front of him.

They have been crossing the river by feeling the stones before, and all the experience recorded by the big man seems not suitable for the northern border country.

Liu Tan made so many things, Huo Guang always felt that each one was unique, but none of them were suitable. It seemed that the only thing that could really benefit the common people was coal.

Now, however, he felt he saw hope.

Huo Guang took a deep breath, tried to calm himself down, and asked the most critical question: "This seems to be good, but Your Highness...whether it is soybean oil or soybean products, these things must not be consumed by the Northern Kingdom So much, so who are you going to sell it to?"