In the inner kitchen of the Tokyo County Palace, Zhao Yan urged anxiously: "Hurry up...... Hurry up and cut all the fruit into pieces, put them in a glass bottle, the water will be boiling soon, and don't forget to add sugar! ”

"King Jun, don't worry, the slave family has already memorized the method of making this canned food, and it will definitely not delay things!" The busy cook in the kitchen said to Zhao Yan with a smile while directing the other maids who helped the kitchen.

"Just remember, you must follow the method I say, and you must not go on any business trips!" Although Zhao Yan said yes, his eyes still kept staring at the busy people in the kitchen, for fear that they would make a mistake.

This year, Zhao Yan let the tenants of Sheung Shui Zhuang plant a lot of pumpkins and tomatoes, and the result was a bumper harvest in the autumn, and the pumpkins and tomatoes handed over to him by the tenants could not be eaten at all, among which the pumpkin was okay, as long as this thing is properly preserved, it will not be bad next spring, but the tomatoes are not good, even if the green tomatoes are picked, they can't be kept for long, it just so happens that several women in the family like to eat tomatoes, and as a result, Zhao Yan totaled, and the remaining tomatoes were simply made into tomato sauce, which not only tasted better, And it also lasts longer.

It was also in the process of making zuò tomato sauce that Zhao Yan suddenly thought of the practice of canning, in fact, tomato sauce should be regarded as a kind of canned food, and the method is almost the same, nothing more than high temperature sterilization and then put it in a glass bottle, and then seal it with a lid for preservation, so that the canned food or tomato sauce that comes out of zuò can be stored for at least half a year to a year, or even longer.

Zhao Yan rarely ate canned food in later generations, and canned food was rarely seen in supermarkets in later generations, which was mainly due to the great material abundance in later generations, no matter what time of year, there were almost all kinds of fresh ingredients, and people in later generations pursued healthy eating. As a result, the invention of canned food to preserve food naturally slowly declined.

However, Zhao Yan is now in the Northern Song Dynasty, and there is no refrigerator cold storage at this time. There are no greenhouses, and the traffic is not developed. This also leads to the scarcity of some materials in this era, such as fresh vegetables and fruits in winter, which can be sold as gold, the last time Zhao Yan was kidnapped by the Jurchens just in winter, at that time he dreamed of eating fresh fruits, but unfortunately this wish was not realized until he returned to the Great Song Dynasty.

It was precisely thinking of the above that Zhao Yan immediately realized the huge commercial value of canned food, but although he knew that canned food was the same as how to make tomato sauce. But I've never done it before, so I ran to the kitchen today to try to make a batch, anyway, everything is ready-made, the autumn fruit has not gone down, and the glass bottle is ordered from the door, so it is not difficult to make canned food.

Although the cook didn't know why Zhao Yan steamed the fruit and put it in a glass bottle, and she didn't know that this kind of thing called canned food could keep food for a long time, but this did not prevent her from directing the cook to make the canned food very smoothly, after all, this thing had no technical content, and after half an hour. Zhao Yan was already full of the first batch of canned fruits, including apples, pears, peaches, etc., although some of the vitamins of the fruits would be lost when heated. The taste has also changed a bit, but being able to eat a bite of fruit in the winter is already a luxury, so where else can it be cared for?

After the cans in front of him became cold, the air in the cans expanded and contracted, and the cork at the mouth of the bottle was sucked very tightly, and it was not easy to open it by hand, and it was necessary to open it with the help of a corkscrew similar to the wine of later generations, but at this time, Zhao Yan still felt that it was not enough to seal, so he asked people to apply a layer of wax to the cork at the mouth of the bottle. It is estimated that such cans will definitely last for more than a year.

"Little bean sprouts, bring these cans. Let's go find the princess! Zhao Yan excitedly instructed at the moment, the decision to make canned food was made by him temporarily. I didn't sue anyone before, but now I can just take it to show Cao Ying, and when she knows the commercial value of the canned food, she doesn't know how happy she will be?

"Yes!" When Xiao Dou Sprouts heard Zhao Yan's command, she immediately agreed obediently, and happily held these canned foods in her arms, but she still asked as she walked, "King Jun, is this thing called canned food delicious?" I wanted to steal a little food just now, but I was slapped by the cook. ”

"Hahaha~, you gluttonous girl, the fruit in the canned food is definitely not as delicious as the fresh fruit, but this thing is not eaten now, but it has to be stored until the winter!" Zhao Yan couldn't help laughing when he heard Xiao Dou Sprouts' words, as time passed, Zhao Yan found that some things around him had changed, even he was changing, but some things were not affected by time, such as Xiao Dou Sprouts' gluttony.

"Winter? Aren't all the fruits spoiled in the winter? Little Bean Sprouts asked with a puzzled expression, and her big eyes were full of question marks.

"Haha~, that's why you have to put the fruit in this glass bottle, so that it won't spoil, and when you open it in winter, you will find that the taste of the fruit inside has not changed much, this is the secret of our palace, don't tell others lightly!" Zhao Yan laughed again and said, and finally half-jokingly told the little bean sprouts.

Hearing Zhao Yan say that canned food was a secret in the house, Xiao Bean Sprouts immediately nodded again and again, indicating that she would never say it. In fact, don't look at the little bean sprouts are usually very confused, but they are trained by Cao Ying to have a sense of secrecy, such as the method of making soap, she is one of the few people in the house who knows, but until now she has not told anyone, and now the method of making soap is still the top secret of the county king's mansion, but Zhao Yan estimates that the method of making soap will not be kept secret for a long time, because as he explains chemistry in the academy, maybe someone will figure out the saponification reaction.

At that moment, Zhao Yan came to Cao Ying's room with little bean sprouts, in the past, Cao Ying must have settled accounts with Mi Xue, but since Zhao Yan got the tables and Arabic numerals out, her work has been much more leisurely, and now she is playing cards with Xue Ning'er and Yelusi, Siyue and Si Ling, the two little girls are held by the nurse to play, as for Ouyang Wanling and Yan Yuru, they are teaching those female students in a courtyard behind the palace, and Princess Bao'an and Princess Shoukang also went to help.

"Stop playing, look what good stuff I've brought!" Zhao Yan shouted loudly as soon as he came in, and then asked the little bean sprouts to pile the canned food directly on the table in front of Cao Ying and them, with a smug expression on his face.

Seeing Zhao Yan's excited appearance, Cao Ying and the three of them were also a little surprised, and looked at the cans on the table at the moment, but the fast-talking Yelusi smiled first: "How did the husband think of cutting the fruit into pieces and putting it in a glass bottle?" But in this way, the red, white and white ones are quite beautiful! ”

"Sister Si'er is right, these things look very beautiful, but now the glass is not valuable, and the texture of these glass bottles of my husband is not very good, I'm afraid it is not easy to take it out and give it away!" Xue Ning'er also smiled at this time, in addition to looking beautiful, she didn't find that there was any use in putting fruit in a glass bottle?

"Hehe, this is not for the sake of pretty, in addition, I can remind you that this kind of thing called canned food will become one of the important sources of wealth for our palace in the future!" Yelusi and Xue Ning'er's words did not surprise Zhao Yan, but made him smile even more proudly.

"Oh? What does the husband's words mean, could it be that there are other mysteries in this thing called canned food? Hearing that canned food can make money, the housekeeper's Cao Ying's eyes immediately lit up and asked, although the palace is not short of money, but as a hostess, she is interested in almost all the businesses that can make money, and even can't wait to grasp all the money-making businesses in her hands.

"The lady is right, there are indeed other mysteries in canned food, but before you talk about this mystery, how about you taste these canned food?" Zhao Yan didn't rush to explain at this time, but instead sold a pass, then took out the tools he had prepared earlier, and then removed the cork on the can, and gave Cao Ying and the three of them a bottle each, of course, he didn't forget to give each of the little bean sprouts and Mi Xue a bottle.

Cao Ying and the others first looked at the canned food in front of them, and then smelled the sweet smell coming from it, and then picked up the spoon and tasted it, but Cao Ying quickly frowned and said: "Husband, although this can is very sweet, the taste of the fruit itself is much lighter, and it looks a little sweet, so the taste is not too good!" ”

For Cao Ying's words, Yelusi and Xue Ning'er both nodded in agreement, no matter what their previous background was, in the past two years, Zhao Yan has also raised their mouths, and they can naturally taste the advantages and disadvantages of canned fruits at once, and even Mi Xue nodded in agreement, but the little bean sprouts like to eat sweets the most, this canned food is really right for her appetite, but now she still holds the canned food and the bottle and eats it non-stop.

"Hahahaha, there are all kinds of disadvantages of eating now, but you can imagine it, lady, if you can eat such a jar of delicious fruit in the cold winter, do you think they will find fault?" Zhao Yan laughed again at this time.

"Winter? Could it be ......" Cao Ying was the first to react when she heard this, and her eyes at the moment when she looked at the can also showed a hot look, if it was really as she guessed, then this can bring not a little profit to the palace, but thousands of benefits.

"Haha, it seems that the lady has understood, canned food is indeed as you guessed, you can store the fruit for a long time, although it has not been done yet, but it can be stored for at least half a year to a year, and even more than a year There are ......"

Just before Zhao Yan's words were finished, he suddenly heard a rush of footsteps outside, and then saw a maid running in with a panicked face and said, "King Qiyu, Your Majesty has summoned you to enter the palace quickly!" (To be continued)