Five-year-old little girl: Mom has thousands of acres of material space

Chapter 24: Raising salt and making ice
  "It's close to the mountain, and there are a lot of minerals in the ground."

While pouring the filtered filtrate into the pot for cooking, Jiang Wei explained: "Saltpeter is generally found in soil in arid or semi-arid climates. That day I discovered that the underground soil was mixed with nitrate."

The villagers in Yuhe Village can't even read a few big characters, so naturally they don't understand these things, and they don't notice them at ordinary times.

Jiang Xiaoxiao seemed to understand. She sighed that she had learned mathematics, physics and chemistry well and was not afraid of traveling all over the world. She secretly said that her mother was really amazing and she deserved to be the heroine!
  Although the heroine usually has the aura of being a heroine and seems to have divine help in doing things, her mother has real skills and knowledge, whether it is geological exploration and investigation, or she has a good understanding of the characteristics of various types of ores.

The pot was cooking gurglingly, the water was constantly evaporating, and gray-white crystals gradually precipitated.

Jiang Xiaoxiao threw more firewood into the stove, increased the firepower, and couldn't help but ask: "Mom, what is the use of refining this saltpeter?"

Could it be that they were making gunpowder?
  But in this era, secretly manufacturing gunpowder may cause trouble...

And making gunpowder also requires sulfur, and there should be no sulfur in their place.

"You'll find out later." Jiang Weinan pretended to be secretive.

She brought in a large bucket and a basin.

When the water in the pot was completely boiled out and enough crystals precipitated, Jiang Wei took out all the crystals and left them to cool.

Most of these crystals are gray-white, and a few are translucent crystals. Although their appearance is slightly different, they are all nitrate precipitated from the nitrate solution.

After waiting for a while, Jiang Wei patted the wooden bucket next to him and said to Jiang Xiaoxiao: "Come on, my daughter, fill it with water."

Jiang Xiaoxiao: "..."

She felt like a tool that didn't know anything.

Apart from helping her mother, it has no effect.

Jiang Xiaoxiao stepped forward full of doubts and stretched out her fingers to put water in the bucket.

The water flowing from the fingertips is small and long, like a small stream, and the water quality is very clean and clear.

After almost half a bucket of water was filled, Jiang Xiaoxiao's fingertips stopped dripping. She shook her head with sweat on her forehead: "I can't do it anymore. I feel like all the strength in my body has been drained."

This power is too strenuous. Once it is used up, the body will be as exhausted as if it were carrying dozens of kilograms of weight.

Jiang Wei looked at the water in the bucket with satisfaction: "It's not bad. Your superpower hasn't been activated for a long time. It's not easy to release such water."

After being praised by her mother, Jiang Xiaoxiao wiped her sweat with some embarrassment.

Jiang Wei filled another half basin of water and poured it into the wooden barrel, and then slowly poured the cooled saltpeter into the wooden barrel.

After the saltpeter met the water in the barrel, it began to react rapidly, absorbing a large amount of heat, and the water in the barrel began to gradually freeze.

Jiang Xiaoxiao had a look of realization on her face, yes, she almost forgot, saltpeter can also make ice!

When saltpeter dissolves in water, it will absorb a lot of heat, causing the water to cool down until it freezes. Wouldn't this make a lot of ice cubes?
  And this was ancient times, there were no refrigerators, so these ice cubes must have been precious.

"Mom, you don't want to make money by selling ice cubes, do you?" Jiang Xiaoxiao touched the ice cubes in the barrel. It was quite cold, just like the ice in a modern refrigerator.

Jiang Wei shook his head: "Although making ice with saltpeter is convenient and fast, this method has great disadvantages. The amount of saltpeter used is huge. There are only two of us. We are small and weak, so we cannot make so much saltpeter."

As she said that, Jiang Wei stretched out her palm and directly put a whole bucket of ice into the space, "But with these ice cubes, we can make some icy cold drinks for summer and sell them." The inside of her space is still, and the ice cubes are still. It won't melt even if you put it in. You can use these ice cubes to make unlimited cold drinks or frozen fruits.

Jiang Xiaoxiao couldn't help but get excited after learning Jiang Wei's idea. Ice-cold drinks in summer are already very popular in modern times, let alone in ancient times when there were no refrigerators and low living conditions!
  "Let's make a simple ice cream first." Jiang Wei thought for a moment. The materials in her space are all ready-made, so she can make anything.

So I took out eggs, sugar, and milk from the space.

She first took four eggs, separated the egg whites and egg yolks, and served them in two porcelain bowls.

To make ice cream, you only need the egg yolk part. Put some sugar into the egg yolk, add a few drops of vinegar, and stir evenly with chopsticks until the egg yolk becomes lighter in color.

Jiang Xiaoxiao was not idle either. He started to light the fire, poured the milk into the pot and started to heat it.

When the milk is heated until bubbles appear on the surface, Jiang Weibin pours the beaten egg liquid into the pot while it is still hot and stirs it while pouring.

This step is very important. If the mixture is not evenly mixed, the egg yolks will agglomerate and affect the taste.

"Just heat it over low heat." Jiang Wei warned from the side, "If the heat is too high, the pot will burn."

"Well, okay!" Jiang Xiaoxiao nodded in agreement and only threw some small firewood into the stove to control the heat.

During this period, Jiang Wei added a few drops of vinegar into the egg liquid.

Vinegar can remove the fishy smell from eggs, making the ice cream taste more delicious.

After the liquid in the pot boiled, Jiang Wei took the pot down and let it cool down for later use.

As for the remaining bowl of egg white liquid, don’t waste it. You can make it into cream and add it to the ice cream to make the ice cream taste smoother and more delicate.

Ginger added salt, sugar and vinegar in sequence, and began to beat the egg white liquid.

When the egg white liquid in the bowl becomes a little thick, add a little sugar and continue beating until the egg white liquid in the bowl is thick enough to resemble dense bubbles, and it can stand up when you insert chopsticks on it. .

Jiang Wei poured the whipped cream into the cooled egg milk, stirred evenly, and the ice cream was almost ready.

Jiang Xiaoxiao watched in amazement. Her mother was indeed an all-round boss and could do anything.

"Xiaoxiao, what flavor do you want to eat?" Jiang Wei suddenly raised his head and asked.

You can also add fruits to the prepared ice cream according to the taste to make the taste more unique.

"Strawberry flavor!" Jiang Xiaoxiao was looking at the half-pot of ice cream with interest, without raising her head.

After saying that, she regretted it.

There should be no strawberries in this world, right? !
  Strawberries were introduced from foreign countries during the Qing Dynasty. Although this world is a world in a book, the framework of the world should be similar to the world she has been in before, right?
  At this moment, Jiang Xiaoxiao couldn't help but become a little nervous, fearing that her mother would discover her identity as a time traveler.

But fortunately, Jiang Wei didn't seem to think too much. She took out a jar of strawberry jam from the space, divided the prepared ice cream into several portions and poured it into the container, pouring a full amount of strawberry jam on one portion.

"You can eat it tomorrow." Jiang Wei said, putting all the ice cream into the space and freezing it in a wooden bucket filled with ice cubes.

(End of this chapter)