“Don’t you feel like you’re going to do what you used to do to earn pocket money?”

“Yeah, honestly, I still don’t know.”

Bang Hyunsik scratched his head and said.

“Hyunsik, listen carefully to what I say from now on. This job isn’t just for you. The farmers in Jirisan, where I belong, are doing well together. It doesn’t mean you’re just helping out.”

“If you thought so, thank you very much. If I had helped out of sympathy, I would have hated it.”

“There is a lot of work ahead. Studying and testing should be done in the shortest possible time.”

“I don’t think hyung’s job is to simply squeeze oil.”

“Yeah, it’s not that simple. This work has to be done with the attitude of a researcher.”

“The attitude of a researcher seems like something great.”

“Starting today, you will move with me.”

“What are you doing right now?”

“First of all, think about the lab.”

* * *

I got into the car with Hyunsik Bang. It was the road to the Jirisan Farmers’ Research Institute.

“By the way, two bottles of sesame oil?”

Bang Hyun-sik looked at the bottle of sesame oil in the paper bag and asked.

“One was given to me by my mother before, and the other I received at the mill today.”

He looked intently at the bottle of sesame oil.

“Brother, can I be honest?”

“Say it.”

“I’m sorry, but I can’t quite understand it in my head.”

He said he didn’t understand what I was saying.

He said that he did not understand at all that he was doing research and experiments to make oil.

It was a natural reaction. Because I didn’t go into detail.

This was not something to be understood in words. I had to see it with my own eyes.

After examining the ingredients in the lab, I was going to tell you the plan.

“I can tell you one thing.”

“The sesame oil we make is not ordinary sesame oil.”

“What kind of sesame oil are you making?”

“Sesame oil that I have never seen before.”

“Is this new sesame oil?”

“Yeah, new sesame oil.”

“How do you make it?”

“You will find out soon.”

We arrived at the Hadong Agricultural Support Center.

I entered the lab with a bottle of sesame oil.

Analysis and experiment for healthy sesame oil

He had told the laboratory that he would test the sesame oil composition.

Researcher Young-ho Lee looked at the paper bag in my hand and said.

“Is the sesame oil you mentioned in it?”

“Right. Can you check the ingredients right away?”

“Yes, I have it ready.”

Lee Young-ho took a bottle of sesame oil.

“I will check with you.”

Seo Woo-young, who was next to Lee Young-ho, said. I thought it was a simple experiment, so I had requested it from Youngho Lee.

Lee Young-ho said that alone was enough. Seo Woo-young was working on improving the quality of fertilizer.

I had no idea he would be interested in this.

“My mother also sent me sesame oil every year. It got me curious.”

Seo Woo-young looked at the sesame oil and said.

“Okay, then we will wait for the results.”

“It won’t take long.”

Hyunsik Bang and I sat on the sofa in the lab and waited for the results to come out.

“This is what the lab looks like.”

Bang Hyun-sik looked around and said. It was my first time visiting the institute, so it seemed strange.

“Hyung, is there anything special in sesame oil?”

“You will know when the results come out.”

“Did you know something?”

Bang Hyun-sik asked with a curious expression that he would die.

“Don’t do that, just tell me a little bit.”

I turned my head and looked at him. It seemed that his curiosity had to be quelled a little.

“I want to check for carcinogens.”

“Is sesame oil carcinogenic?”

Bang Hyun-sik looked at me with surprised eyes.

“What kind of substance is it?”

“You will see that from the results.”

“I honestly can’t believe it. That our homemade sesame oil may have carcinogens.”

At that time, Seo Woo-young and Lee Young-ho came out with sesame oil.

“The content of benzopyrene is higher than expected.”

Seo Woo-young said with a firm expression.

“What is benzopyrene?”

Hyunsik Bang asked.

“Benzopyrene is a carcinogen. The International Agency for Research on Cancer classifies it as a Class 1 carcinogen. When it accumulates in the body, it can cause mutations along with cancer.”

Lee Young-ho calmly explained to Bang Hyun-sik.

“I can’t believe our sesame oil has such a bad thing in it. Are you talking about the ones made in the mill, not the ones we made at home?”

Bang Hyun-sik asked with pathetic eyes.

“Unfortunately, benzopyrene was found in both.”

Seo Woo-young said to Bang Hyun-sik. Bang Hyun-sik looked like he was disappointed.

“Benzopyrene is a substance produced during the heating of food. I know that high heat is used to make sesame seeds in oil form. It seems that benzopyrene was produced in the process. I expected that there would be some benzopyrene, but I was surprised that there were more than I expected.”

It was already expected. There was one thing I was curious about through the experiment.

“Do you know if benzopyrene is generated when heated to more than a certain degree?”

I asked Seo Woo-young.

“It depends on the conditions. I don’t know the exact number, but I think it will be less than 100 degrees. Even below 100 degrees, trace amounts may be detected. I think you will know the exact number only when you manufacture it yourself.”

“thank you for your effort. We will take care of the rest.”

“Then the experiment ends here?”

Seo Woo-young asked while touching the frames of his glasses.

“I will bring sesame oil next time.”

Then his expression brightened.

“Next time I will bring you sesame oil without benzopyrene.”

“Yes, I will.”

I left the lab with Hyunsik Bang.

* * *

The levels of benzopyrene were higher than expected. If the highest level was 10 ppb, the level of benzopyrene in sesame oil exceeded 5 ppb.

The mill’s state-of-the-art machine-made sesame oil was close to 7 ppb. It was the result of hot pressing.

Bang Hyun-sik had a disappointed face. He seemed shocked to hear that sesame oil contains carcinogens.

“Why are you so weak?”

“I feel sorry for the people who sold sesame oil. I really didn’t know there were carcinogens in sesame oil.”

Bang Hyun-sik’s expression was not a word. It was a genuinely sorry face.

“You know, it’s not like that. The same goes for the millennials.”

“But how did you know?”

Bang Hyun-sik looked into my eyes and asked. I couldn’t say I saw it in the future.

“I got to know you flexibly on a business trip to Germany.”

“From Germany?”

I told him about the sesame oil incident in Germany.

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One of the Koreans tried to import and sell sesame oil. However, the German Food Safety Authority banned the sale of sesame oil. This was the reason for the excess of harmful substances.

It actually happened too.

“It happened by chance.”

“Didn’t you tell me in advance?”

“If I told you, would you believe me?”

“No, I probably ran all over the place. It can never be.”

Bang Hyun-sik said with a smile. It seems to have calmed down a bit now.

“Now do you know what sesame oil I mean?”

“Yes, I think I do.”

“We will make sesame oil that does not contain benzopyrene. As I heard in the lab, you have to make sesame oil below 100 degrees. We have to find the exact temperature. Even the time to roast the sesame seeds.”

“I need to know at what temperature and how much to fry.”

“Okay, we need to find the best conditions for benzopyrene to come out.”

“You have to catch the taste as well.”

“Of course, it also tastes good.”

I could feel the fighting spirit in Bang Hyunsik’s voice.

“I’m going to leave that to you.”

“Am I alone?”

“Okay, I want you to take it.”

“Then… how about your brother?”

“While you do that, I plan to build an oil press.”

“You build an oil press?”

“With a milking machine at home, you can only do experiments. To sell sesame oil, you need a machine that can produce it in bulk.”

“You’re right, but aren’t such machines expensive?”

“You don’t have to worry about that.”

“Because of me…”

“As I said back then, it’s not just about helping. I also look forward to the future and invest. I believe that there is such a possibility.”

“Thank you, bro.”

When I first started farming, there was nothing. I had no money to buy dried persimmons, so I made a credit transaction.

I would never have come this far without the help of people.

Just as I was given a chance, Hyunsik Bang also needed a little luck.

I believed that things would go well together.

Arrived at Bang Hyunsik’s house.

Before we parted, I had something to give him. I took things out of my bag.

“what is this?”

“It’s an infrared thermometer.”

Hyunsik Bang held the thermometer in his hand. It was shaped like a pistol and was the perfect size to fit in.

“You will have to use a thermometer to roast the sesame seeds.”

“Even so, I was thinking. How do you measure the temperature?”

“Your job is to make sesame oil at different temperatures. Sesame oil has to be prepared at different temperatures. Check the roasting time of sesame seeds. I will take the sesame oil I made that way back to the lab.”

“I understand what you said now.”

“What do you mean?”

“You said you have to work as a researcher.”

“Yeah, you have to work like a researcher. It will be very different from the ones made with sesame oil so far. You have to meticulously record and experiment. As you said, don’t miss the taste.”

“I will try to make sesame oil under as many conditions as possible.”

“Okay, I’ll try to build the best machine too!”

Benzopyrene 0 was the target.

I also needed a machine for squeezing sesame oil.

* * *

I needed a machine to squeeze the oil.

There was no standardized machine for pressing oil in the mill.

They were called by various names, such as an oil press, a milking machine, and an oil press.

From the press method to the hydraulic method, there was no single method of movement.

The names and methods were different, but the principle was one.

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Oil is squeezed out by applying pressure to seeds such as sesame seeds.

Before the advent of machines, it is said that the seeds were put in silk cloth and pressed with a pestle or stone to make oil.

I thought about going directly to a factory that specializes in supplying machines to mills. But he soon changed his mind.

The factory product was geared towards squeezing roasted sesame seeds at high temperatures.

The sesame seeds roasted at a high temperature of over 200 degrees are weak in fiber, so the oil can be easily squeezed out. The machine is also designed for it.

Sesame seeds roasted at less than 100 degrees have a hard fiber, so it was impossible with a general machine.

It required more power than a normal machine.

There was a person who came to mind while thinking about it.

It was Lee Jang-woo. A friend of mine who was a comrade in the military.

He came from a mechanical engineering high school and was adept at handling machines.

He was also a person who received a commendation for excellent small and medium-sized enterprises as the president of a future precision company.

He was the right person to entrust the oil press.

I called Jangwoo Lee.

“Deokmyeong, how much is this?”

“Long time no see? I’m sorry, I can’t contact you often.”

“What are you doing these days? Do you go to work?”

“No, I am a farmer.”

“farming?”

It was a startling conversation. Briefly tell him about the past.

“Everything happens in life.”

Jang-Woo Lee liked to organize things in one word.

As always, one arrangement was well done.

I told him the business.

He replied that he currently runs a precision company with his father.

It was not yet the time when he was running his own business. But there was also good news.

He said that he had experience in making oil presses.

That was enough.

“I’m going to Incheon right now.”

“anytime.”

I ran to Incheon.

It was long, but powerful.

When I made benzopyrene-free sesame oil, I was thinking of squeezing it out right away.

The machine had to be completed as quickly as possible.

Arrived at Incheon Machine Street.

I stopped the car under a sign that read ‘Incheon Precision’. Upon entering, Lee Jang-woo in work clothes appeared.

“How much is this! Nothing has changed.”

Lee Jang-woo took off his glove and held out his hand.

“You are still there.”

I went into the office with him. The office was gloomy.

“Are there no people?”

“Right now, it’s all gone and my father and I are running it. A lot of work has gone down lately.”

He said as he handed him the mixed coffee.

“Where did your father go?”

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