Chapter 352： you can dream

Chapter 352 You can dream

"You've never been out of town. Of course you don't know. The rich, especially rich, do you think they will be short of ice to eat? They will definitely build an ice cellar, and they will pick ice in winter and eat in summer." That person said. "But it seems that no one in our town can eat ice in summer. Maybe our town is too small. Even if there is money in our town, it will not be enough if we compare it to the county or a larger place. I see."

Xue Sihu joked: "When I make a lot of money, I will also dig an ice cellar, pick ice in winter and put it in, and open it in summer to eat."

The two laughed and said, "Little brother, you can dream of this."

It was not until the two of them finished eating the rice noodles and left, and Xue Sihu was about to call it quits, that Xue Yan said to Xue Sihu in a low voice: "Fourth brother, I once read it in a miscellaneous journal, and there was a faint mention of saltpeter in that book. It is said that the saltpeter was accidentally dropped into a bowl of water, and the bowl of water became a little cold. I think the saltpeter may absorb heat and make the water cool. ice--"

"Xiaoyan!" Xue Sihu immediately covered his precious brother's mouth and looked around, seeing that no one noticed them or heard his precious brother's words, so he took his precious brother and precious sister to them. The corner behind the booth is farther away from the people in the booth adjacent to him.

Seeing their fourth brother reacted like this, Jiang Yue and Xue Yan looked at each other as if they were startled, and it was done.

"Xiaoyan, the one you said..." As soon as he came to the corner, Xue Sihu couldn't help but look around, and seeing that he was far enough away, he asked in a very low voice, unable to restrain his excitement, "Yes, that's the one. Saltpeter, is it really possible to freeze water?"

Xue Yan also whispered: "If the book says there is indeed something, it is very likely."

"Good. Good." Xue Sihu was gearing up, although his voice was low and pitiful, he was even more excited. "Let's go back and buy saltpeter, but where is this stuff sold? Is it expensive?"

Xue Yan: "The medicinal value of saltpeter is very high. It can be sold in general medical centers, but it is quite expensive. It is expensive because it is so expensive, and the amount must be very small, so the amount we can buy should not be much. , If we want to buy more, we should ask Yu Xuan's father for help. He is a doctor and a famous doctor, so he should be able to get more saltpeter. One more thing, fourth brother."

"What?" Xue Sihu asked immediately.

"Although saltpeter can be used medicinally, it is poisonous, so even if it is used to cure diseases, it can only be used in a very small amount. If it can really make ice, we can't directly put saltpeter in the ice-making water. , that ice cannot be eaten."

"If this can really make ice, how can you make edible ice then?"

"You can use a large basin filled with water, and another small basin filled with water and put it in the big basin, and the saltpeter will magnify the water in the basin. Not only does the water in the big basin freeze, but the water in the small basin also freezes. It's iced, just eat the ice in the small basin."

"Good way! Alright, if saltpeter can really make ice, just do it!" Xue Sihu was very happy.

Xue Yan glanced at Jiang Yue again and said, "This saltpeter should be reusable. Yuxuan has a medical book that says saltpeter. It says how to separate the saltpeter from the nitrate-containing clods. The nitrate-containing clods are placed in a bucket, soaked in water, then filtered, and then the filtered water is boiled or dried to obtain saltpeter. If it can make ice, then the saltpeter will be in the ice. Boil the ice or dry it, and you should be able to get saltpeter again."

In fact, the latter sentence is somewhat wrong. Yesterday, his family Yuebao told him that saltpeter can be reused by cooling crystallization method and evaporation crystallization method.