Soon, Lin Luo came to a stove that was originally used to boil salt.

At this time, a fire had been lit in the stove, and a large clay pot with half a pot of water was placed on it.

Next to the stove, you can also see a pile of gray-white plant ash that exudes residual warmth, as well as two thick white radish.

"Pour that dirt into the pot. ”

Lin Luo turned his head and instructed the craftsman beside him.

At the same time, he also picked up a clay bowl next to him and scooped the ashes into the clay pot one by one.

It wasn't until the clay pot was filled that it stopped.

"Put more charcoal and burn it over a high fire. ”

Then, Lin Luo turned his head to the craftsman and said.

"Yes. ”

Hearing this, the craftsman nodded in reply.

Immediately stoop down in front of the fire and add charcoal to the stove.

"Phew!"

Lin Luo took out a piece of linen, tore off a small piece and handed it to the bamboo chief.

"Chief, cover your mouth and nose with this for a moment. ”

"What are you doing with your mouth and nose covered?"

Looking at the linen cloth handed by Lin Luo, the bamboo chief's face was full of puzzlement.

"You'll find out in a moment!"

Lin Luo said as he tore off a small piece and handed it to the craftsman.

"Goo-doo! goo-doo......"

It wasn't long before the clay pot began to tumble under the roasting of the fire, a mixture of earth and plant ash.

And as the water was boiling, the bamboo chief finally understood why Lin Luo gave him a piece of linen.

"Gross!"

Smelling the rich stench in the air, the bamboo chief retched and immediately covered his mouth and nose with a sackcloth.

On the side, the craftsman who was originally taking care of the fire also hurriedly covered his mouth and nose and hid away.

Seeing this, Lin Luo had no choice but to go into battle in person, holding a thin bamboo stick and reaching into the pot and stirring.

And with the stirring of the bamboo sticks, the smell suddenly became even stronger.

Because the dirt is not only dirt, but also mixed with some dung.

"Vomit!"

Soon, the sound of retching could be heard in the distance.

They are not the only ones here, there are many craftsmen who are refining white salt.

"Why does it stink so much?"

"What is this doing?"

"Is there in the pot?"

......

Everyone immediately put down their work and gathered around in whispers.

Seeing this, Lin Luo endured the stench, turned his head to everyone and said, "You all carefully watch the process of making nitrate, and this matter will be handed over to you in the future." ”

Lin Luo was reluctant to use the soil method to make nitrate before, because this method was really sinful.

Therefore, he only planned to do this demonstration for this time, and then he would leave it all to them.

“......”

On the other side, when the craftsmen heard this, their faces immediately turned green.

Is this a human job?

......

Soon, after boiling for about twenty minutes, Lin Luo asked the craftsman to help filter it together.

Wait until a large amount of soil and impurities have been removed, and continue to boil on the stove.

This time, in the process of boiling, Lin Luo also threw the two white radishes into the clay pot.

Since the planting area was opened, the team has tried to transplant edible plants every time they go out to collect.

White radish is one of them, which was successfully transplanted to the growing area last year.

After adding the white radish, Lin Luo continued to stir it with a bamboo stick to boil.

It wasn't until two-thirds of the water in the pot had evaporated and it looked viscous that Lin Luo stopped.

"Remove the fire!"

Throwing the bamboo stick aside, Lin Luo turned his head and said to the craftsman.

"Yes. ”

Hearing this, the craftsman nodded in reply, and quickly took out all the charcoal in the furnace.

"Lin Luo, is this okay?"

Seeing this, the bamboo chief covered his mouth and nose and approached the stove, looked at the viscous liquid in the pot and asked Lin Luo.

"There shouldn't be any problem. ”

Lin Luo said with some uncertainty.

In fact, Lin Luo also saw this method on TV, and he was not 100% sure.

However, he still knows the principle of this method.

The white particles of soil scraped from public toilets are called nitrate, which was the main material for making nitrate in ancient times.

Putting plant ash and nitrate into the pot for heating, in fact, is to let the potassium carbonate and nitrate chemically react, and finally get potassium saltpeter.

As for why he put turnips, he really didn't know, but it happened that radishes were planted in Menggu, so he learned to do it in the TV series.

Whether it can succeed or not, we can only wait and see the results tomorrow.

Hearing this, Chief Bamboo didn't ask any more questions.

It's just that smelling the still strong smell in the air, Xiang Lin Luo said: "Lin Luo, can you choose a new place to make nitrate in the future, this smell is too stinky." ”

Now, the bamboo chief is really worried that the strong smell will also smoke the refined white salt.

When the time comes, who will trade their white salt!

"That's what I didn't think about enough. ”

Hearing this, Lin Luo looked embarrassed.

Although he knew that it would stink when boiling nitrate, he didn't expect the smell to be so big.

Today, the entire white salt refining area is filled with this foul smell.

Therefore, Lin Luo immediately said: "If this time can be successful, then I will send someone to build a new area for making nitrate near the mouth of the valley." ”

Saltpeter, unlike white salt, is of little use to other tribes even if they knew, so there is no need to keep it a secret in particular.

After speaking, Lin Luo turned his head to those skillful craftsmen and asked, "Have you seen the nitrate making process clearly just now?"

"See clearly. ”

Hearing this, all the craftsmen around nodded in response.

Compared to refining white salt, nitrate making is slightly simpler, and they memorize it all after just looking at it once.

"Good. ”

Seeing this, Lin Luo nodded and said, "After the nitrate-making area is completed, you will teach a group of clansmen how to make nitrate." ”

"Yes. ”

Hearing Lin Luo's words, all the craftsmen immediately responded in unison with smiles on their faces.

Teaching other people to learn how to make nitrate means that they don't have to do this job in the future!

This is simply saving them from the sea of dung!

Therefore, all the craftsmen seemed to be very excited.

I can't wait to pull over a group of clansmen to teach them immediately.

......

Following

After getting up early in the morning, Lin Luo couldn't wait to rush to the area where the white salt was refined.

When he got there, he noticed that the Bamboo Chief and the Fox Chief had arrived earlier than him, and they were looking down at the clay pot as if they were studying something.

After seeing Lin Luo coming, the Bamboo Chief immediately said to him, "Lin Luo, how is the white salt you are refining!"

"White salt?"

Hearing this, Lin Luo couldn't help but be stunned.

But then, an expression of ecstasy appeared on his face.

Immediately walked to the fire and looked down into the clay pot.

I saw that at this time, the walls of the clay pot were covered with white crystalline particles.

It really looks very similar to white salt.

"It's a success!"

Suddenly, Lin Luo let out an excited shout.