"Well, no, haven't you heard of this drink?"

"The owner, the villain makes fragrant drinks in this Tokyo city, although he is not a famous person, but all kinds of drinks have been seen and tasted.

I really haven't seen this one that the owner said, let alone tasted it......"

"That's right...... Chilled sour plum soup, this drink was invented by me! I'll pass this recipe to you now, remember, don't leak it, but you ask......"

Of course, Su Xiaocai drank the sour plum soup drink, and he remembered a few raw materials, but he didn't know exactly what kind of ratio it was. He just remembered that he couldn't put too much licorice, and if he put too much, it would be easy to get bitter.

"Ten parts of black plum, ten parts of hawthorn, two parts of licorice, one part of sugar osmanthus, and an appropriate amount of rock sugar...... Clean well water or mountain spring water, boil for more than half an hour, let it cool, and add ice when drinking......"

"Huh? These other ingredients are common, but in the summer, this ice needs to be bought from a big family with an ice cellar, and it is very expensive......"

"You don't care about this, I want to send it to you......"

Although it is the twilight of spring, the weather in Bianjing is already very hot, and with 200 people gathered in a big room, everyone is still hot and sweating...... Take an iced drink, go out now, and definitely sell it for a good price......

"Wood ......"

The "......" did not answer.

"Lao Yong, go and get me the Wood Descending Dragon......"

"Yes......"

After a while, this wood appeared in front of Su Xiaocai's eyes with great reluctance. Su Xiaocai tugged at his ear and said, "Your brother, as a little follower, has no consciousness of being a little follower at all!" I'm calling you, you're going to be there, you know? ”

"I went to the bookstore to maintain order......"

"Birds! You've been listening to books and you've heard all of this at least twice, haven't you? ”

"Yes, I did hear it twice, the first time when you said it, and the second time when you recorded it...... But this old man is really wonderful......"

"Boy, you have to learn to drink water and think about the source......"

"But this old man really spoke wonderfully......"

"You mean, I'm not talking about it, right?"

"The same story, but to tell it, you are really a little bit ......"

“……”

What this kid said was a fact, and Su Xiaocai was speechless.

"Well, I'll admit it...... But now you old man has to bear with me for a while and go and do something for me......"

Su Xiaocai came to the counter, planning to pick up the pen and write out the ice-making recipe, but he felt that the simplified Chinese he wrote might be a little difficult for others to recognize. So I had to ask Yonghe to write......

"In the deep cellar, there are a number of water tanks, a large amount of cold water in deep wells, a large amount of saltpeter, and a number of pure copper basins. A large amount of saltpeter is dissolved in the large vat, and a pure copper basin is placed in the middle of the tank, and the basin is built with clean deep well cold water......"

"Hey, what's this for?"

"In my way, you will find miracles...... The water in the tank and the water in the pure copper basin will freeze...... Since the water in the pure copper basin is clean and frozen, it can be used......"

"Why do you have deep cellars and cold water from deep wells?"

"Because the temperature underground is low and the deep wells are cold, the temperature is lower, so it is easier to freeze ......"

"Got it, but what do we want to do with the ice?"

"Sell cold drinks...... You were listening to a book in the bookstore just now, and there were 200 people huddled together, don't you feel hot? ”

"It's really hot, and there are a lot of fatter people now, and their heads are already sweating......"

"It's just the twilight of spring, and in a while, what will it be like to get hot? So this ice, we're going to have to try to make it......

If we can, we will dig a relatively large basement under this Li Kee Bookstore, and make ice underground, and we will even make this basement into an ice cave, and the cold drinks will be served directly in it......

Yonghe and Mu looked at Su Xiaocai with a look of disbelief......

"Is this really going to work?"

"Just try it...... So I've written this recipe out for you to take back and try to do it in our Zhuangzi, and if it works, we'll start working here right away...... Lao Yong, you have to pay attention to the secrecy of this recipe......"

Now there is no one else around, only a few acquaintances. So Yonghe directly said: "Boss, don't worry...... The little one is also an old man in the Five Elements Gate, and he is still familiar with the door rules! I've reached this age, and I don't want to die under the sword soldiers because of this, and my head is in a different place......"

If this succeeds, this area will become an absolutely cool summer island in the sweltering heat of Tokyo in the summer!

Su Xiaocai planned it this way:

When saltpeter is dissolved in the large water tank, it will naturally freeze, and only when the large tank is frozen, the water in the copper basin will also be frozen into ice......

The ice in the vat dissolves saltpeter, which is naturally inedible, and this kind of ice can only be chiseled down, placed in other containers, and carried to the bookstore, so that the ice slowly melts in the bookstore and absorbs the heat......

Once a large amount of ice like this is placed in the bookstore, the listeners will naturally be cool and sweat-free......

And after the ice melts, it can be carried to the sun by this water, and after drying, a layer is left, which is saltpeter......

In this way, the use of saltpeter has reached the ......

Imagine, in the scorching summer, once the listeners enter the Li Kee Bookstore, they can not only drink frozen sour plum soup and listen to interesting stories, but also in this cool environment, the heat and troubles outside will naturally dissipate cleanly......

In this way, Li Ji Bookstore will naturally become a particularly high-end place, those rich people, in order to be able to enjoy, of course, to a large extent, but also for comparison, they will not spare the money in their hands......

Later, I can only think about it now, theoretically speaking, saltpeter ice making can be realized, but the specific scale and what kind of environment is needed, and experiments are still needed......

However, the current wood is already convinced of the words of the big talent, because the story of the monkey has indeed started such a big and hot business...... In addition, there are many skilled craftsmen in the entire Five Elements Gate who are already on that Zhuangzi, busy because of Su Xiaocai's concept......

Therefore, Su Xiaocai's prestige has already been established among these people......

So Mu took the letter and hired a donkey cart to hurry to Zhuangzi......

Of course, the wood was also tracked by the tail......

Su Xiaocai was a little worried, would the people of the Wang family follow them to Zhuangzi, will they find out that they are tired of it, which will bring unnecessary trouble......

And after doing these things, it was already dark, and Master had gone out and had already returned......