Su Wanyu looked at Su Wanxuan, feeling a little helpless and soft-hearted, and she was only a thirteen-year-old girl in the end.

"Gollum". Su Chengze swallowed his saliva and looked at Su Wanyu with sparkling eyes.

Alas, Su Wanyu sighed in her heart, this ghost weather is really too hot. This cold drink and cold food should be an ordinary thing, so buy it and let everyone eat it together.

"Where can I buy it?" Su Wanyu said.

Wu's mother said: "In Yizhou City, cold drinks and cold food are only bought in the Zuixiao Building in Nantang and the Guiyun Pavilion in the West Gate. Last year, my wife sent me to Zuixiao Lou to buy it once, and it seemed to be ice and snow cold meatballs, oh, and ice and snow licorice soup. ”

Thanks to the memory of the original owner, Su Wanyu knew that Zuixiao Mansion and Guiyun Pavilion were two restaurants.

There are countless large and small restaurants in Yizhou, but there are no more than a dozen luxurious restaurants, and Zuixiao Lou and Guiyun Pavilion are among the leaders.

It's just that she is a little puzzled, how can cold drinks and cold food only be bought in high-end restaurants. In her previous life, ice cream would be sold in high-end restaurants and dessert shops, but cold drinks would also be sold in ordinary supermarkets and street shops.

"Aunt Wu, don't you have anything to sell in other stores? On that day, I saw a lot of restaurants and many small food shops in Nantang, but none of them were sold? ”

"Ice drinks and cold food are expensive food, not to mention snack shops, even ordinary restaurants will not sell them." Mother Wu said.

"Isn't it expensive?" Su Wanyu wondered.

"In the past, we could cook it at home, and we had to eat it several times a year." Su Wanxuan said with a pout.

"The eldest lady and the second lady are in the boudoir, and they don't know the value of cold drinks." Mother Wu said: "Ice and snow cold balls, as well as ice and snow licorice soup, one will cost half a price." Even the top ordinary sorbet ice drink costs 200 wen a cup. ”

Su Wanyu was speechless and said, "Why is it so expensive." ”

She went to Nantang Street that day and bought five buckets of rice for almost half the money. The money for a serving of ice and snow cold balls is enough for the ordinary people of Yizhou to eat for a month.

Ice drink and cold food, where can the average person eat.

Selling cold drinks and cold food in summer is not a huge profit.

Su Wanyu had a faint idea in her heart.

"yes. The most important thing is to have ice. But as long as there is ice in winter, it will be expensive to hide it until summer," Wu's mother said: "The average family's cellar, if you hide the ice in winter, it will melt in the spring, how can you hide it in summer." Only the extremely deep and very large ice cellar can hide the ice until the summer, and ah, the style of this ice cellar is excavated and whatever, all of which are exquisite, I don't understand. ”

"Well, our house used to have an ice cellar." Su Wanxuan said.

"In the past, there was indeed an ice cellar in the big garden, but every year the ice was stored in winter and summer, and a lot of it melted.

Some of this ice is cooled in the house during the days when it is hot, and some of it is made into ice drinks and eaten cold, but it is only enough for a few masters to eat a few times. Mother Wu said.

She listened to Wu's mother's explanation, and she understood seven or eight points in her heart. But she still wanted to confirm her thoughts, so she said:

"Why hide the ice instead of making it?"

Mother Wu laughed and said, "Miss, ice and snow in winter, thunderstorms in summer." If you don't hide ice, you can't make ice in the summer. ”

Su Wanyu is sure of it.

The Great Qi Dynasty did not have a method of making ice.

Like a long drought and nectar, Su Wanyu was overjoyed in her heart, it was really an endless road.

She knows how to make ice.

Speaking of which, I want to thank the evil college entrance examination in my previous life, and thank you for the hard and tiring student career. The knowledge learned in college and at work was useless in ancient times, but the basic physical and chemical knowledge learned in school was useful.

She is a science student, and her best subject is none other than chemistry. In addition to basic classroom knowledge, she also participated in an enrichment class in chemistry. I learned this method of making ice in a chemistry enrichment class.

Not only does she know the principle, but she has also done experiments with her own hands. It can be made in a high school laboratory, and the raw materials and equipment are very simple and safe.

According to Wu's mother, nowadays, the price of cold food is mainly because the storage cost of ice is quite high, and if she can make ice and sell it, it will be a profitable business.

The huge profits during this period are far beyond the reach of even selling smuggled salt.

Su Wanyu's heart was surging, she seemed to hear her heartbeat violently because of excitement, and she seemed to feel that the blood flow in her whole body was speeding up.

Although she tried her best to control her mind, the corners of her mouth still rose unconsciously, making Su Chengze around her look inexplicable.

"Isn't it demonic again. I can't buy this cold drink or cold food. Su Wanxuan pursed her lips and snorted.

"Miss......" Chun Tao called softly.

"It's okay, Chun Tao, go out with me once after dinner." Su Wanyu said. Because of the excitement, the voice was a little out of tune.

"Yes, miss." Chun Tao nodded.

After eating in a hurry, Su Wanyu put down her chopsticks, took a crockpot casually between the stoves, took Chun Tao's hand, and went out.

After a meal, Su Wanyu calmed her mood a little.

Although she is ** sure that she can make ice, she has traveled to a different world from her previous life after all, and there is a uncertainty of one or two points.

She feared that the greater the hope, the greater the disappointment.

So Su Wanyu suppressed the excitement in her heart and nervously began to prepare the materials for making ice.

"Sister Chuntao, where is the nearest thatched house?" Su Wanyu asked.

"Miss, we have a bucket in the house." Spring Peach Road.

"I'm going to get something." Su Wanyu explained.

"Go to the thatched house and get something......" Chun Tao whispered.

Su Wanyu was already nervous, and when she saw that the more she depicted it, the darker it became, she hurriedly said, "Sister Chuntao, just tell me." ”

"Miss, just walk through the alley." Chun Tao stretched out his hand and said, "But ......"

Su Wanyu walked quickly. Chun Tao hurriedly followed.

Before I got to the hut, there was a foul smell. The foul smell emitted by the accumulated feces of adults, with a little fermented sourness, indescribable nausea, Su Wanyu's stomach also felt a little uncomfortable. Chun Tao on the side covered her nose with her hands.

Su Wanyu has always loved cleanliness, but at this time, she had to pinch her nose and walk in.

This thatched house was converted from a simple earthen wall. Two planks were simply laid on the ground. Accumulation of feces was clearly visible under the wooden plank, solid, liquid, yellow, yellow, black and black layered on top of each other. Dark yellow dung was all over the ground, and some were still flowing. In the corners of the walls and in the fecal water, there are white maggots wriggling.

As soon as Chun Tao entered the door, her eyebrows and eyes were wrinkled, and she said, "It's really dirty." ”

Su Wanyu endured her nausea and looked at the wall of the thatched house. The walls of this hut have a thick layer of solidified white crystals. Su Wanyu said in her heart, this is it.

~~To be continued~~~~~

Dear friends, the new book is for collection.

Thank you very much.