First of all, there is no technology required to refine oil and crude oil, and secondly, there is no equipment, but the most fundamental thing is that there is no principle that can be thrown, and even Einstein or Edison, who have superior IQ, must need a lot of time to specialize and polish before it can be developed within three years.

And all of this must also stand on the "shoulders of giants", otherwise everything is empty talk, everything is in vain.

There is no way to extract oil at the end of the Yuan Dynasty and the beginning of the Ming Dynasty, at least in terms of the form and tasks faced by Su Zedong, Qin Tiancheng and Liu Zhenming, this is not necessary to do and it is still very laborious and time-consuming to do.

In general, it is a thankless effort.

In fact, Su Zedong is also very clear, and he also understands how difficult it is to refine industrial oil! It is true that he does not know what chemical formulas and physical equations are, but he is very clear about history and geography, what Daqing Oilfield and what Oilfield, which is something that can only be built by the efforts of several generations!

How can someone dig it out in minutes?

However, what is not there now does not mean that there will be no in the future, Su Zedong, Qin Tiancheng and Liu Zhenming can't do it, it doesn't mean that the group of people they have cultivated can't do it, or there are people outside the people There are mountains outside the mountains, and others can't do it!

For example, whether it is China or the world, after using animal oil for a long time, vegetable oil began to exist because of the birth of oil extraction technology.

Animal oil is very easy to refine, as long as the animal has meat, and then roast or dig it directly, and their fat oil will come out.

Although the number is small, it can also maintain a certain amount of life and the need to cook rice and vegetables.

After arriving, the refining of vegetable oil began around the Han Dynasty.

However, according to Su Zedong's knowledge, there was still no way to eat vegetable oil directly at that time, after all, there is a long way to go from the start, development and maturity of a thing, and there is still no way to avoid this process, cancel or replace.

This must conform to the objective law of development, otherwise all kinds of problems will surely arise!

Later, things have finally been well developed, sesame oil is the earliest widely used vegetable oil!

Su Zedong has found that sesame oil has become a very common cooking vegetable oil in Tang.

However, the record of frying things in oil was still after the middle of the Northern Song Dynasty, and the records of fried food began to increase.

According to the records, Su Zedong inquired and obtained: there is a section on oil in Songzhuang Jiyu's "Chicken Rib Compilation", detailing the extraction of various vegetable oils in the Song Dynasty, sesame oil in Hedong, almond, red and blue flower seeds, cranberry seed oil in Shaanxi, and Shandong Cangzi oil.

In addition, there is also punkun oil (suspected castor oil) and black tree oil. Fish oil in the coastal areas of Wuzhou and Pinzhou. There is even human brain oil in some places! (In Xuanhe, Jingxi apologized, cannibalism", and "refining the brain into oil, and the food vendors in the Quartet could not distinguish it").

However, there are not many records of the most common soybean oil in later generations, but it should have been produced at this time, but the application is not as widespread as sesame oil!

These are all food chronicles of a dynasty and place, the first information and materials, Su Zedong takes it for granted that he needs to polish and check it well, so that he can be worthy of his title of liberal arts student, otherwise everything is nonsense, everything is in vain, and things that are not said are like nonsense.

Therefore, Su Zedong didn't want to show off his knowledge, he also wanted to get more things, so he continued to picket, and he knew that in the Ming Dynasty, the variety of vegetable oil extracted from plants increased.

These things are not made up in a vacuum.

What is made up out of thin air is not only something that no one wants to believe, but also something that no one will feel able to accept.

According to the record of "Tiangong Kaiwu", Su Zedong knew: "For those who eat oil, flax, sulforaphane (i.e., radish) seeds, soybeans, and cabbage seeds are the best; Su Ma and Yun Taizi followed; Tea seeds are second, amaranth seeds are second; Although at this time peanut oil has been introduced to China.

But "Heavenly Creation" does not mention peanut oil. Peanut oil is the latest vegetable oil to be born.

There is a mention of cotton oil in "Heavenly Creation", but it is mentioned as lamp oil!

After learning about the Ming Dynasty, Su Zedong definitely needs to know more.

Therefore, he also knows that the production of peanut oil should be in Qing! However, in the "Regulating Disease Diet" and "Oil" written in the eighteenth year of Jiaqing in the Qing Dynasty, only four kinds of vegetable oils are recorded: fatty sesame oil (sesame oil), soybean oil, Yuntai oil (rapeseed oil), Jibei oil (cotton seed oil), and no peanut oil. Those four oils should be the main edible oils in ancient China.

After learning about such a process, Su Zedong's interest came up, and he couldn't get enough, so he continued to track down the general standards and methods of edible oil and industrial oil in that part of Europe.

As a result, Su Zedong found a more obvious problem is that one side of the water and soil to raise one side of the people, people in Europeans rarely use vegetable oil, at least in the Middle Ages, they choose to use animals, or trees and plants on the oil, rather than the butter we see today, tofu oil, peanut oil.

However, when searching for relevant information, Su Zedong further understood what the general process of making oil was in ancient times.

The cookbook "Diaoding Collection" in the middle of the Qing Dynasty also has "Oil Theory": "Vegetable oil is taken from its thickness, sesame oil is taken from its fragrance, and it must be used for cooking." The sesame oil jar is buried in the ground for several days, and the oil and gas can be used before it can be used. In addition, sesame oil is boiled out of moisture, that is, it is smokeless, and it can be used cold. In addition, the small mill will fry the sesame seeds and grind them, and the oil will be fragrant, but the big car sesame oil will not be as good. Soybean oil and vegetable oil have been boiled in water, called 'cooked oil', and they are used to cook, without damaging the spleen and stomach, and it is better to bury them in the ground.

Made in the Qing Dynasty? In the eighteenth year of Jiaqing, in the "Regulating Disease Diet and Distinguishing" and "Oil", only four kinds of vegetable oils are recorded: fatty sesame oil (sesame oil), soybean oil, Yuntai oil (rapeseed oil), and Jibei oil (cotton seed oil).

From the Yuan Dynasty with accurate historical data, the old-fashioned wooden oil press has been prevalent in our country for more than 700 years, perhaps its history may be more than a thousand years, until 1959 after the liberation, there are 150,000 wooden oil presses in the country, and the oil produced accounts for 40% of the national output, and in 1964, Zhejiang Province took the lead in eliminating all wooden oil presses in the country, and this wooden oil press gradually stepped down the historical stage.

There are many similar ancient and mature traditional crafts that have been used, such as Western wine processing technology, which is enduring, ancient and vibrant, and is deeply loved by people.

Originated in China, the process of tea and liquor mainly adopts a series of traditional methods such as steaming, frying, and fermentation, all of which are made by hand and produced in small batches as the highest level.

After Su Zedong learned about this, he didn't study it anymore, after all, there was no need for this aspect.

There are really a lot of worries and a lot of trivial things that he needs to solve in this world.

So much so that in the back, a lot of things diluted Su Zedong's enthusiasm for these things, and then there were not so many things that were worth doing for Su Zedong, because they were just a formality, and no one really cared about how a person felt, anyway, it was enough to be happy, happy and satisfied, and other things basically had nothing to do with them.

Therefore, Su Zedong still chose to stay away from that kind of right and wrong, and after resigning from the meeting, he came to the late Yuan and early Ming dynasties.

It's better to say that he pretends to be stupid, or pretends to be stupid, anyway, there is no orthodox way and knowledge to make sure that he has such a way and method to come to such a world.

The same is true for other people, Su Zedong doesn't know how many people are in the same situation as himself.

Anyway, everyone has their own troubles, and everyone has their own troubles.

When everyone feels very uncomfortable because of certain things, it may be better to change their mindset.

Su Zedong thought so, but in the later life, that is, in the twenty-first century, he didn't feel any sense of existence and something worth staying, and if he killed himself, it would really not fit his character and temper.

Therefore, Su Zedong is indeed finding a way to free himself.

When the vast number of books could not satisfy his thoughts and thinking, Su Zedong became more eager to change his current situation and situation.

In a place where no one loves and no one else manages, Su Zedong can live alone and live a good life, which is no problem at all.

However, this is not the world he wants.

Everyone has their desire and ideas to express themselves.

Therefore, Su Zedong doesn't want a mediocre and idle life, he has lost too much, and his career, love and family have no binding force or influence on him.

He wanted to travel in the past, but Su Zedong thought that a heart that didn't have much love for life would go there.

His fifth and last relationship, Su Zedong went to a place, and it happened.

She is a girl who has been hurt emotionally, she is also a girl who loves to read, and she is too, Su Zedong confirmed the relationship with her girlfriend after only staying with her for a day.

&nbs The 542nd chapter of "Da Ming 1368" you watched: She has the person she loves The anti-theft mode has been enabled, and only half of the chapter is not connected to the content of the previous chapter. For the hidden part in the back, please go to Baidu to search: Qi Shuwu and then search for "Daming 1368" to watch