It took a while to dig up the nitrate, and the salt soldiers immediately came with a bag of hemp. Pen "Fun" Pavilion www.biquge.info

Sun Yi looked into the sack and recognized. In later generations, I played in southern Xinjiang and saw this kind of salt, and the local villagers called it soil salt.

The soil and salt in southern Xinjiang are as thick as concrete, and they are real salt with soil. People who use soil salt use a jar to fill water, dissolve soil salt in water, and after standing, it will be layered, and the upper layer is a layer of foam, greasy, just like the layer of pickled vegetables floating on the surface of the water tank. The middle layer is a cloudy or clear liquid. The lower layer is sediment and mud. When using salt for cooking, use the water in the middle of the scoop to use as salt.

It is said that the mutton in southern Xinjiang can only taste correct if it is stewed with soil salt. A local friend brought Sun Yi to the village, and when he ate mutton, he specifically asked for soil salt. In the villager's house, the pile of soil salt is half a person's height.

Villagers say that the nitrate content of this kind of soil salt is relatively high, and there is a saying in the salt lake area that "salt is fished in summer and nitrate is fished in winter". The government has banned it, but it doesn't stop. Because the local villagers have been accustomed to the taste of earth salt, they feel tasteless when they change to other salts.

The government had no choice but to make an opening and only allow naan shops to use soil salt. Naan is the staple food of the people of southern Xinjiang, just like the rice of the southerners, and the people of southern Xinjiang insist that the taste of naan beaten with soil and salt is authentic. The dietary foundation of this generation is hard to shake.

Northern Shaanxi is also rich in soil salt, and when the Eighth Road was in Yan'an, there was a saying that "it is better to lose Yan'an than to lose the salt pond".

It is said that the soil salt in northern Shaanxi was also banned in later generations, because the relevant departments tested that the soil salt in northern Shaanxi contained less than 50% sodium chloride.

There are even more earthen salt ponds near the Wolf Mountain River that no one cares about. In the summer, the salt in the salt pond can be more than a foot thick, smash the salt lid, dig up the ready-made salt and carry it directly. Nearby nomads even drive their cattle to the salt ponds twice a year to lick salt.

Under Sun Yi's command, everyone washed a pot, poured clean water, and threw large chunks of salt into it. The salt quickly melted in the clear water, and Sun Yi ordered to add salt cubes until the salt at the bottom of the pot no longer dissolved.

Ha Laocai quickly skimmed off the impurities floating in the pot and made a fire to burn the pot.

Sun Yi sighed in his heart, it seems that he was wrong to blame "Zhou Papi" before. "Zhou Papi" can make the chicken croak in the middle of the night, indicating that "Zhou Papi" gets up earlier than the chicken every day, and is actually a diligent person.

The pot was boiling, and Sun Yi instructed Ha Laocai to withdraw it into a low fire and keep the water surface slightly rippling. Then he threw a few twigs and hay into it.

As the water evaporates, small grains of salt begin to attach to the branches and straw.

Sun Yi took out a straw stick, "Come, taste it." So saying, he cut the grass into knots and divided it.

I tasted it, "It's salty, but it's not warm enough." ”

Sun Yi smiled, exactly the same as the words of the southern Xinjiang villagers who were used to eating soil salt.

As the water in the pot boiled less and less, more and more salt grains appeared on the branches.

Sun Yi scooped a bowl of water from the pot, threw a few hay into it, and set it aside to cool.

When the water in the bowl was already cold, there was no reaction on the straw stick.

Sun Yi poured the water back into the pot, scooped a bowl of water, and still threw a straw stick into it, and put it aside to cool.

This time as the temperature of the water in the bowl decreased, salt grains began to appear on the hay.

Sun Yi immediately called for the removal of the stove, and took out all the branches and straw sticks in the pot that were stained with big salt lumps, and put in new hay branches again.

The solubility of sodium chloride in table salt in water basically does not change with temperature, while the solubility of impurities such as nitrate in water will drop sharply with the decrease of temperature. Therefore, the crystallization by lowering the water temperature is basically impurities such as nitrate. This is also the scientific basis for the saying "salt in summer and nitrate in winter".

Sun Yi took out a piece of salt-dipped straw stick from the bowl and put it on the charcoal on the burnt red ground.

The damp grass quickly dried up and began to burn.

If the salt grains on the sticks are nitrate, the nitrate will release oxygen when heated, and sparks will burst out on the charcoal.

The salt particles burned on the charcoal, emitting only a faint purple color, and there was no spark that Sun Yi expected.

Sun Yi announced with some disappointment, "It's not nitrate."

Jia Daoshi took a straw stick from the bowl, put it in his mouth and took a sip, "Isn't this salt!" ”

Sun Yi shook his head, "It's not salt. ”

The flame reaction of sodium chloride combustion should be yellow.

Sun Yi took out his mobile phone and checked the information of the flame color reaction, and asked Daoist Jia,

"When you tasted it just now, did you feel a little bitter?"

Daoist Jia replied: "Salt, how can there be anything that is not bitter!" ”

"You try this again." , Sun Yi handed Jia Daoshi a branch that had been fished out of the pot and was stained with large pieces of salt.

Jia Daoshi dug up a piece of salt, put it in his mouth, turned his tongue around, smacked it, and said, "This salt is really not bitter." ”

Sun Yi announced: "The bitter salt in the bowl is called potassium salt. ”

According to the information that Sun Yi just checked, the flame reaction of potassium is purple, and the taste of potassium chloride is very similar to that of sodium chloride, which is used to make low-sodium salt in sodium chloride in later generations, but if the potassium chloride content is too high, it will have a bitter taste. So the newly precipitated salt in this bowl is undoubtedly potassium chloride.

The stuffy guy didn't know when he came back, and then he smiled and said: "The bitter salt boiled out has the surname of Jia Daoshi, called fake salt." ”

Daoist Jia was anxious, "Bitter salt is true or false, not Jia surnamed Jia!" ”

The sullen asked Jia Daoist sincerely, "Isn't your surname true or false?" ”

"It's not!" Jia Daoshi was about to cry.

The word "potassium" did not exist in the fifth year of Chongzhen.

Sun Yi pondered for a moment and said, "Daoist Jia, don't dislike this potash salt, it follows your surname, or your creation!" ”

The master spoke, and although Daoist Jia was unhappy, he could only admit it with a long face.

Sun Yi comforted him and said, "Potash is a good thing, it is fertilizer. ”

The stuffy man raised his head suddenly: "This fake salt is fertilizer!?" How is fertility? ”

Nitrogen, phosphorus and potassium are the basic fertilizers for crops, and according to Chinese data, applying chemical fertilizers to poor land can increase yields by 15 kilograms per kilogram.

Sun Yi then said: "It is more fierce than manure, and one pound of potassium salt can make fifteen catties more grain." ”

The stuffy man jumped up excitedly and hugged the Taoist priest: "Daoist Jia, this fake salt of yours is really a good thing!" ”

Ha Laocai was taken aback, at this time, an acre of land can only be beaten with 100 catties of grain all year round, and a catty of Jia salt can increase the yield by 15 catties, and the ten catties of Jia salt are not top of an acre of land!

Ha Laocai looked at a sack of soil salt, and said while quickly dialing the plate in his heart: "This sack of soil salt is estimated to be one hundred and fifty catties, if a bag of soil salt can refine twenty catties of Jia salt, it is equivalent to picking up three hundred catties of grain for nothing." How many bags of salt do you have there? ”

The sun fell and said: "There must be more than thirty bags." It's impossible to say exactly how much. ”

Ha Laocai immediately shouted: "Bring them all!" Bring them all! All of them are used to refine Jia salt! ”

In Ha Laocai's heart, more than 30 bags of salt are 10,000 catties of grain!

Daoist Jia's face suddenly became brilliant.

- Ye said, this good thing should follow his surname Jia, this is an opportunity for his name to go down in history!

Jia Daoshi has secretly made up his mind that the salt in his house is refined from the "salty water", just like the words "salt" and "fleil", from the side of the word "bird", which means "salty". Add another word "Jia" next to the word "Bird", which is both from the sound and from the surname, which is the name of this own family salt.

Daoist Jia wrote "Hu Jia" over and over again in his heart, and every time he wrote it, he was more happy.