The three of them galloped all the way back to the Yiguo Mansion, and returned directly to Qin Feng's courtyard, where the lard and caustic soda were taken to the courtyard by the little guy, Qin Feng slapped his head and forgot to buy the pot. With a wry smile, he asked people to buy a pot first, and the three of them commanded the little guy to build a simple stove in the courtyard.

The stove was set up, the pot was bought, and the pot was set up and the water began to boil directly.

After the water was boiled, all the lard I bought was thrown into it, and the lard of the white flowers was tumbling in the boiling water, and the air in the whole courtyard was filled with a faint fishy smell.

Seeing that it was almost over, Qin Feng took a piece of fine gauze prepared in advance from the side, and instructed Qin Huaiyu and Cheng Chumo to filter out the grease, and then put it in a basin on the side to wash it. And Qin Feng instructed the little guy to pour out the pot and clean it, and then threw the cleaned grease of Qin Huaiyu and Cheng Chumo into the pot, and let the little guy keep fanning the fire, the fire became more and more fierce, and Qin Feng was sweating profusely and kept stirring the grease inside with a stick. Seeing that it was almost over, he called Qin Huaiyu to continue stirring, while Qin Feng took the caustic soda and threw it directly into the pot according to the amount of almost one-third of the fat. Continue to cook over high heat. The three of them took turns stirring, and after more than half an hour, Qin Feng poured a lot of coarse salt into it and continued to stir evenly.

About half an hour later, when the three of them were so tired that they couldn't hold on, a layer of pale yellow ointment-like things finally appeared on the water surface of the pot.

Qin Feng was overjoyed in his heart, this is soap, Lao Tzu is really a genius. looked at Qin Huaiyu and Cheng Chumo, who were sitting on the side, and they weren't ready to call the two of them.

Call a servant and ask him to scrape the yellowish paste with a scraper into the wooden box prepared in advance. Wait until it cools slowly, and it's a big piece of soap. And Qin Feng had already begun to calculate the cost of this thing.

In the morning, I went shopping with my usual money. Fifty catties of lard cost less than 200 yuan, ten catties of caustic soda 100 yuan, and the rest of the money was bought coarse salt, salt was more expensive at this time, and the remaining 700 yuan probably bought less than 5 catties of coarse salt. There were about 5 catties of lard in this pot just now. If you calculate the cost of this money, at least you can make 10 boxes of this big box, and if you cut it, you can cut 40 or 50 yuan into a box, which is 4 or 500 yuan. Even if a piece is sold for 5 yuan, it will be 2 yuan down, doubling the profit. It's just that salt is too expensive now, and it's all official salt, and private ownership is a capital crime. Looks like we'll have to figure it out.

After waiting for nearly an hour, the sky was getting dark, and the soap in the box was gradually solidifying. Let the little maid go and get a basin of water, find a few dirty clothes and throw them in to soak for a while, dig up a piece of soap, gently scrub on the clothes, soak it in water, and the stain will disappear without a trace.

Everyone watched in amazement.

"Young master, this thing of yours is so amazing, it will be much easier to wash clothes in the future!" A guy who has been helping said excitedly.

Qin Huaiyu and Cheng Chumo also nodded on the side. There was also a look of excitement on his face.

"These are just experiments, you can wash clothes, and you can add some spices to make them, which is the real soap. Washing the body is even cleaner, and it is fragrant! Qin Feng said to the two of them.

"Then what are you waiting for, go get some spices, let's make another piece!" Qin Huaiyu commanded the little guy.

"Wait, don't worry, let's do it tomorrow. Let's go find some food, and tomorrow we will bring two people over and learn by the way, so that we can prepare for the future. Now let's go and say hello to our father-in-law. Qin Feng stopped Qin Huaiyu.

"Cut off a piece of soap and bring it to your stepmother! Cut a few more pieces and let Chu Mo take them back to his aunt. Tomorrow morning, I will bring soap to find a few brothers, and ask them if they are willing to do this business together, if they are willing, come over tomorrow morning, and let's discuss! ”

"Fengzi, okay, I'll inform a few of them tomorrow, and a few of them will definitely be willing!" Cheng Chumo said with certainty, too, the sons of several generals are together all day long, fighting and beating up girls are all together, making money is such a good thing, how can they fall behind each other.

The little guy cut off a few pieces, Qin Feng wrapped them in paper, and prepared them for Jia Shi later. Cheng Chumo wrapped up the remaining pieces and put them in his arms.

The three of them moved to the front hall, there was no one, and they asked the housekeeper, Qin Qiong was not there, and he had not come back from the palace. Jia Shi was playing with 3-year-old Qin Huaidao in the backyard, and several people came to the backyard, gave Jia the soap to explain the use, and then said goodbye.

Out of the backyard, Qin Huaiyu and Qin Feng returned to the small courtyard, while Cheng Chumo went back to the house with soap.

When they returned to the small courtyard, they instructed the servant to bring some food and wine, and the two of them ate and drank in the house.

While eating and drinking, he asked Qin Huaiyu about the affairs of this era, although Qin Feng came from later generations and studied history, there is always a gap between history and reality. It's better to know a little more. Fortunately, he is now Qin Qiong's righteous son, and he can bully himself in Datang, and he can be counted.

After talking for a while, Qin Huaiyu was a little absent-minded, and Qin Feng asked

"Huaiyu, what's wrong? Tell me about something you are absent-minded! ”

"Fengzi, I'm fine. It's just that I want to be like my father, fight on the battlefield and make contributions, this is what a man should do. You say yes! After Qin Huaiyu finished speaking, he picked up the wine glass in front of him and drank it all.

That's it? It's depressed! You're only twelve years old, and you want to go to war. Qin Feng pouted:

"On the last fart battlefield, isn't it good to live well, there are so many opportunities to make contributions, who said that you have to go to the battlefield to make achievements! And how dangerous the battlefield is, if you are not careful, your life will be gone! What should I do with my stepfather? Do white-haired people send black-haired people? ”

"What do you know, it is difficult for us military generals and disciples to have a chance to stand out except for going to the battlefield and winning military industry. Besides, my father's health is not good, as the eldest son, how can I support this country after I don't build a business? Although it is said that the national prince is hereditary, how can a military general be called a military general if he does not go to the battlefield! When I am sixteen years old, I will run to the battlefield, and when the time comes, I will die on the battlefield, and I will not be ashamed of my father. ”

Qin Feng listened to Qin Huaiyu's more and more excited, this kid really didn't know how to be blessed in the blessing, Qin Feng couldn't imagine what the two old men of the Qin family would look like after Qin Huaiyu died on the battlefield, Qin Qiong is now closed, in addition to being afraid of Li Shimin's suspicion, the second is to leave some merit and good Meng Yin descendants, otherwise, if he dies that day, there will be no scum left in the Yiguo Mansion that will be eaten by others. Several generals have had contacts with the Qin Mansion, and when the time comes, it will be good to take care of their brothers. I am really born in the midst of blessings and do not know blessings.

"If you want to go to the battlefield, I won't stop you, but you must leave incense before this, and then do whatever you like. Huaidao is still young, and he is a concubine, so he can't inherit the position of the Duke of the Kingdom, and if the position of the Duke of the Kingdom is lost in your hands, the Qin family will decline faster. Don't believe it, my father-in-law's illness will slowly improve with medicinal diets, and my body will slowly recover, and when the time comes, my father-in-law will continue to go to the battlefield to fight for military merits to send me away, we don't forget the people of Qinfu, and now we can only rely on you. Qin Feng said bitterly.

"Fengzi, I'm also planning for our Qin Mansion, before you came, just me and Huaidao's two children, Huaidao is only 3 years old, I can't say anything to him, and my father has been sick for a long time and can't go out all day, just like this in a few years, then the world will forget our Qin family."

"With me here, don't think so much, isn't it just to make a contribution, there is a way not to go to the battlefield, when the time comes, when you get married and have children, I will accompany you if you want to go to the battlefield! Now, don't think about it so much! None of that is on the table now. Why is the food in this house so unpalatable, let's go to the kitchen with me to get something to eat! ”

Qin Huaiyu saw that Qin Feng was not talking about this issue, nodded and walked towards the kitchen with Qin Feng.

When the two came to the kitchen, they didn't find anything to eat, and just now the two of them drank a lot of wine, and when they came out, the cool breeze blew, and they were suddenly a little drunk. Forget it, go back to sleep, and the two of them went back to the house, and fell asleep directly on the bed and clothes.

Qin Feng, who was asleep, was still muttering that he must copy a recipe, and then eat it in a different way every day. Qin Huaiyu echoed in a low voice.