If it is a simple decoction, just like when Xu Mu boils the base of the medicinal hot pot, the best utensils are naturally a casserole.

From the point of view of modern science, the main ingredient of the casserole is silicate, which is chemically stable, evenly heated, slow heat transfer, and the water is not easy to evaporate during decoction, which can ensure the efficacy of the decoction, and is the first choice for decoction.

In addition to casseroles, ceramic clay pots, etc., are also available, and the reasons are similar to those of casseroles.

You can refine the elixir, but the casserole will not work.

The casserole has the characteristics of poor heat transfer and high heat resistance, which is destined to be easy to break when it suddenly alternates between hot and cold.

For example, after heating the casserole, if you suddenly add cold water to the pot, the casserole will crack nine times out of ten.

The alchemy process is complicated, even if it is only a grade 1 pill Pei Yuan Dan, I don't know how many times I have to alternate between hot and cold halfway, and the material of the casserole is naturally unbearable.

Therefore, Xu Mu thought of using a pressure cooker to refine Pei Yuan Dan.

Not only because the pressure cooker is more resistant, but also because the pressure cooker is equivalent to an alchemy furnace with a natural 'formation' in terms of some effects!

Yes, the pressure cooker is actually an alchemy furnace with its own 'formation'!

Anyone who has studied physics in middle school probably remembers a small experiment: using ordinary paper to make a box shape, containing water, and using fire to burn the carton, the water in the box will eventually boil, but the carton will not break.

This is because at normal atmospheric pressure, the boiling point of water is 100 degrees, while the ignition point of paper is higher than 100 degrees!

No matter how big the fire is, how strong it is, or whether it is an earth fire or a sky fire, it can only burn the temperature of the water to 100 degrees.

If it exceeds 100 degrees, the water will turn into water vapor.

But as soon as the air pressure increases, this theorem is broken. Even if the temperature is higher than 100 degrees, the water will not boil and the temperature will continue to rise.

Due to the structure of the pressure cooker, when boiling water, the air pressure inside is higher than 1 atmosphere, and the temperature of the water is higher than 100 degrees. So use a pressure cooker to cook the rice, and the rice will be cooked quickly and quite crispy.

What Xu Mu needs now is this feature of the pressure cooker, which can raise the boiling point of water to higher than 100 degrees!

If there is no pressure cooker, it will take a lot of effort to carve a formation on the alchemy furnace that can forcibly raise the temperature of the water to more than 100 degrees without turning it into water vapor.

"It seems that science and cultivation are not completely incompatible, but they still have commonality in some aspects......

Xu Mu looked at the red and black German imported pressure cooker in his hand, and sighed silently in his heart.

This pot is not cheap, and it cost him more than 4,000 soft sister coins.

But you get what you pay for, the material of this pot is extraordinary, not ordinary stainless steel on the market, not to mention aluminum alloy, but made of ceramic steel technology, the hardness can reach several times that of stainless steel!

Whether it is alchemy or decoction, it is very important for the material of the vessel, iron, aluminum, copper, etc. are excluded first and must not be used. Because the chemical composition of these materials is unstable and easy to oxidize, it is very likely to have a chemical reaction with the ingredients in the medicine during alchemy or decoction, and then not only will the medicinal effect be completely lost, but also toxic substances may be generated!

Therefore, when choosing a pressure cooker, Xu Mu did not dare to be sloppy and greedy for cheapness, and directly chose the most expensive brand that he could buy at present.

The medicinal materials are available, and the alchemy furnace has also found a replacement, and the next thing is not difficult for Xu Mu.

With the inheritance of Venerable Youlong, he is very familiar with this aspect.

"Let's go!"

The thirty-two medicinal herbs had been arranged in the kitchen in order, and after Xu Mu carefully checked it again, he turned on the natural gas.

Watching the flames rise at the bottom of the pressure cooker, I first threw four herbs of long pepper, golden cherry seed, mountain sesame seeds, and psoralen into the pot, and added half a bowl of water to cover these four herbs just two centimeters.

At the beginning of alchemy, you don't need the high pressure of a pressure cooker, you only need to cover it with an ordinary pot lid, and then use a martial fire to quickly boil the medicinal liquid, and then switch to a simmer to slowly boil.

Sixteen minutes passed, and the liquid in the pot began to gradually evaporate, turning into a black, slimy colloid.

"The start was very successful and exactly as expected. Alchemy is really simple for me. ”

Seeing this, Xu Mu was a little excited.

Although he had a systematic body, he was clearly told that it was not difficult to refine Pei Yuan Dan. But in the actual first operation, it is inevitable that there is still some apprehension in my heart.

And it is also in the absence of a real alchemy furnace, which can only be replaced by a pressure cooker......

Now it seems that there was nothing wrong with his approach.

"Next are the four medicinal herbs of monk fruit, bergamot, forsythia, and cassia seed. ”

Xu Mu was meticulous, a little trembling, operating in strict accordance with the Dan formula, always paying attention to the changes in the country, constantly regulating the size of natural gas, and controlling the heat.

Modern high-tech things are good at this, and the heat can be easily controlled.

If it was the original ancient alchemy, it was necessary to use coal and wood to make a fire, and the fire would not be so easy to control.

After another ten minutes, this wave of medicinal materials was also melted and refined.

And so on and so forth.

Before you know it, nearly four hours have passed. Even if Xu Mu had successfully gathered his qi and stepped into the threshold of a cultivator, he still felt tired.

But he couldn't do anything else, he had to concentrate and stare intently at this boring change.

This is only refining a level 1 elixir, which is relatively simple and easy. If it is a high-grade elixir, it needs to be controlled by a real 'Danhuo', which is even more troublesome.

Finally, by the time of the seventh wave, a strange smell of medicine began to gradually appear.

This taste is different from the aroma of medicinal hot pot, it is not very good, but it makes Xu Mu feel a throbbing feeling, and he who has just eaten a full meal becomes hungry again.

It's just that this kind of hunger is no longer just a simple desire to eat, but because of his cultivation of Purple Qi Donglai Gong, his body is losing money, and he needs some kind of supplement.

"Is this the taste of Pei Yuan Dan? I haven't succeeded in refining it, so my big knife is a little!"

Xu Mu's eyes widened, he was already very tired, and he was suddenly shocked and cheered up.

Soon, it will be the most critical time.

About half an hour passed, and the black paste gradually began to glow with a little red.

Xu Mudang added several expensive medicinal materials such as cordyceps, bezoar, ganoderma lucidum, and wild ginseng to it, and then quickly closed the lid of the imported pressure cooker, gently rotated it, and tightened it, and at the same time, the firepower of natural gas was also adjusted to the maximum!

Goo-goo!

After the original lid is closed, the air pressure in the pot instantly rises, and it continues to climb, far exceeding the temperature at normal pressure. At the gas eye on the lid of the pot, there was also a white mist rushing straight up, almost thirty or forty centimeters high.

"It's not going to explode, is it?"

Xu Mu's eyebrows trembled, he held his breath and concentrated, and his heartbeat quietly accelerated a little.

The final result of this alchemy, success or failure, is all in one fell swoop.

The final stage of the level comes faster than any of the previous steps.

It only took three minutes, and in the pressure cooker alchemy furnace, there was a 'bang' concussion sound, which was a bit similar to the last explosion of fried popcorn on the street when I was a child.

Fortunately, the quality of the pressure cooker that Xu Mu bought was high enough, and the lid was not lifted off, but the entire pressure cooker also fell from the natural gas stove.

Xu Mu hurriedly reached out and grabbed the handle, so that he didn't let him roll off the stove.

"It's ......"