Datang: Signed in for Seven Years and Was Exposed by Empress Changsun

"Of course not. It's just filtering. People will be poisoned if they eat it."

"Ah?" Li Shimin was a little puzzled, "Then what's the use of filtering?"

"The next step is to use tofu water, which is the key."

So he asked someone to pour all the tofu water into the pot, and started cooking again.

It is almost exactly the same as the first step of filtering, boil and filter again.

Then filter it with tofu water, and continue for five times.

The gypsum and other substances in the tofu water can neutralize the potassium kaempferen, and then filter it.

All the potassium kaempferen remains on the gauze, as long as the gauze is changed every time it is filtered.

Until the last time, the whole process took nearly an hour.

Just to purify a few catties of salt, of course, less than half of the salt is left after purification.

Because when it is cooked, it will evaporate.

But the resulting salt will be incredibly white and non-toxic.

If the technology of later generations is used, at least two-thirds of the salt can be left.

Because of the technology of later generations, the volatilization of these brines can be well suppressed.

So there will be a lot of salt left, but it is completely impossible to do it now.

But it's not bad to have so many left.

When everyone saw the white salt crystals, their eyes widened.

"General Li." Changsun Wuji approached, "Is this all right?"

"Okay, you can eat the salt as long as you mash it, and this kind of salt is easier to mash than freshly mined salt."

This salt-like crystal is much looser than the newly mined salt.

It's almost all grainy, so it's fine to mash.

But whether it is poisonous or not, you have to try it to know.

But seeing such pure white salt was an eye-opener for Li Shimin.

With a red face, he patted his thigh, "Mix these salts into the meat, and pull a dog to test the poison."

"Yes!"

Immediately, someone took the purified poisonous salt and mixed it into the meat.

Then he pulled another dog up and put the meat in front of the dog.

The dog was very excited to see the meat and ate it directly.

This made everyone's hearts rise to their throats, if nothing happened to the dog.

Then it means that this method is useful, if it dies, it means that this method has completely failed.

Everyone didn't want the dog to die, so they stared at the dog that ate meat.

The dog found it a bit salty on the first bite, but ate it anyway.

Even wanted to eat a second piece.

After seeing the dog eating the meat, everyone stared at him intently, wanting to see if it would become poisonous.

Because the poisonous salt will not attack immediately after eating, and Li Hong has diluted the salt with water.

So everyone deliberately waited for a stick of incense, if ordinary people eat poisonous salt.

It will attack within less than half a stick of incense at most, resulting in abdominal pain.

But after the dog passed by, there was no abnormality.

Looking at everyone with his tongue out, he obviously wanted to eat another piece.

Seeing this scene, everyone looked at each other in blank dismay.

Li Shimin smiled, "Great, this method is successful!"

The rest of the ministers also started discussing, with excited expressions on their faces.

"I didn't expect this method to be really useful."

"That is, can General Li's method go wrong?"

"Why didn't we think of it before?"

"..."

Li Hong was very calm on the surface, but in fact he was in a panic.

He saw this method by accident when surfing the Internet before, and he didn't know if it would work.

This kind of thing happened suddenly today, so I had to try it.

I didn't expect it to work, but everyone is happy.