"So, Professor, shall I continue to explain the subsequent knowledge of potions materials?"

Elena's eyes flickered, and she said sweetly.

"Oh, oh, of course, Miss Kaslana. Slughorn said cheerfully.

The old walrus, who didn't know that he had been written on the list by the three generations of the Dark Lord, blinked, gave Elena an appreciative look, and motioned for the girl to continue to help him popularize potions knowledge according to the previous progress.

With a few questions in the classroom, the students' interest has been fully aroused.

After realizing Hermione's challenge, Elena also had an eye in the subsequent description, and did not choose to continue in the field of potions, but shifted the conversation to the biology that she was more familiar with.

As the third generation of the Black Lord, Elena would not be negligent in this "one hundred times" bet.

Wait until tomorrow morning Gringotts will send Hermione the extracurricular book list that she bought for the summer, and after she finds a time to study it properly, she will counterattack and design traps, which is a fair contest.

"Ahem, I'm going to focus on the dangers of puffer fish and bats......

Elena cleared her throat and pulled out her wand and tapped on the blackboard.

"In addition to the fact that the puffer fish inflates itself to deter enemies when it encounters danger, the most dangerous thing about it is that it can carry a toxin, tetrodotoxin (TTX), which is one of the most toxic neurotoxins found in the non-magical world, and was even the most toxic active toxin in nature in the eyes of Muggles. ”

"Just 0.48 milligrams of tetrodotoxin can easily take a person's life. If someone here licks the puffer fish in curiosity, or doesn't wear gloves as they do, if they are a little unlucky enough to ingest a little toxin, one of them may leave us forever tomorrow......"

Elena's gaze slowly swept across the classroom and said in a calm tone.

Her voice was only slightly higher than a whisper, but everyone could hear every word she said, as if a trumpeted Professor Snape had suddenly appeared in the classroom, and the underground classroom became orderly in an instant.

Poisonous?!

If you touch a little bit, you'll die?!

Most of the little wizards subconsciously moved their bodies back, wanting to move a little further away from the puffer fish eyes that exuded a "poisonous" aura, due to the "Big Blue Fish Battle" that happened last semester, Hogwarts students could already calmly deal with the dead fish, if it weren't for Elena's words, maybe there were really many children who would have started directly.

And a reckless little boy like Michael Korna's face turned a little whiter.

Just now, in order to save trouble, they directly grabbed the puffer fish eyes with their hands and threw them into the grinding dish, and now with Elena's cold explanation, Michael only felt that his hands were a little hot, as if they were stained with hot chili sauce.

It's really uncomfortable...... These bear kids at Hogwarts......

Elena glanced at the little wizards who were secretly putting on their gloves and shook her head helplessly.

Only those who have actually been a Potions professor - well, albeit a teaching assistant - will understand the reason for Severus Snape's stress and irritability in each of his previous classes, unlike other classes, there are so many ways to die in Charms class, if you are not careful, it is only a small wound, and it is possible to let these little guys go directly to Merlin.

Tetrodotoxin (TTX) is a highly toxic marine bioactive substance.

Tetrodotoxin, which includes tetrodotin, tetrodotoxin, puffer ovary toxin and pufferfish liver toxin, is one of the most violent toxins in nature, with 1250 times more toxicity than potassium cyanide, and can cause central nervous system anesthesia in a short period of time.

If people mishandle puffer fish or eat them by mistake, they can cause poisoning and even death.

And this is only the potion materials involved in the beginner Potions class, in the upper grades of Hogwarts, as the potions materials began to appear more and more "magic materials", the danger of them also increased exponentially.

As a young wizard with a tenure of less than ten years, Snape had so much to worry about in Potions class.

Thankfully, at least in today's world, there won't be a second group of super invincible bear kids like the Iron Triangle who will go to great lengths to pull fireworks into other people's cauldrons in order to steal potion materials.

When you think about it, she is really a great, kind little angel.

If it weren't for the fact that there was no way to ask for credit, just by easing the relationship between Harry and Snape, Elena felt that she could have found Severus Snape to get a huge amount of house points, and even the release method of spells such as Shadowless.

"However, pufferfish toxins are very stable in chemical and thermal properties, and although they cannot be destroyed by ordinary cooking methods such as salting or sun exposure, if they are heated in a high-temperature environment for more than 30 minutes, they can usually decompose toxins ......."

The kind-hearted little angel paused for a few seconds, patiently waiting for Hermione to finish her notes and continue to speak.

"Therefore, if you don't want to die a tragic death, it's best to follow the textbook process and put a mixture of puffer fish eyes and nettles in a crucible and cook it for at least 45-60 minutes before doing it – and in the process, even if you are a little thirsty, don't pay attention to the hot soup in front of you. ”

Perhaps in the wizarding world, wizards don't have that much in the microscopic realm, but that doesn't mean they're ignorant.

As supernatural beings with magical powers, wizards are much easier at trial and error than Muggles.

If boiling for an hour weakens toxicity, then two hours, and if two hours does not, then six hours...... Anyway, as long as you pay attention to the poison at any time and take countermeasures in advance, even one person can summarize the potion in the form of tasting.

If no matter how much you try, add new materials or tweak them with magic.

Potions progress has been slow, but that doesn't mean people can't use the stupid method of repeating experiments to come up with answers.

Even the most basic potion such as the Swelling Potion, the control of time and temperature is undoubtedly the final preparation process that has been gradually explored and determined by generations of potions masters, spending countless hours, little by little.

"Not bad at all!"

Slughorn nodded, cleared his throat, and raised his finger in a serious expression.

"Time and temperature, don't take any shortcuts unless you think you're more than all the Potions Masters. And more importantly, how you handle potions. The former determines the quality of the potions you ultimately produce, while the latter is related to whether you can safely complete the potion making process. ”

"But, Professor......"

At that moment, a Hufflepuff boy with a full head (quan) suddenly raised his hand.

"I've eaten puffer fish with my mother many times before, but don't ...... In the non-magical world. If this puffer fish is really as dangerous as you and Sister Elena say, why are so many people eating it outside?"

"Excuse me, sir, what's your name?"

Slughorn's eyebrows twitched, and he glanced nonchalantly at the strange little wizard.

Although he does not discriminate against hemp wizards from the non-wizarding world, Slughorn still has some very subtle superiority and helplessness whenever he encounters such a little guy who doubts his magical knowledge with Muggle knowledge.

"Justin, my name is Justin Fenreary, Professor. ”

Justin replied quickly, looking at Slughorn generously and saying, "I'm from the non-magical world, and although my parents don't know magic, my family is doing pretty well. Sometimes they would take me with them to banquets or socials, and I had the impression that although they didn't eat puffer fish often, we probably ate it several times. ”

"It is not surprising that Muggles are always greedy for immediate pleasure and do not see the hidden dangers. ”

Slugho frowned slightly, and replied casually with some impatience.

"Well, Mr. Fenrieri, if you know more about the potion material of the pufferfish, you will understand that there is a possibility of toxins everywhere on its body, which is the experience of countless potions masters after trying it...... Do you think Muggles know how to deal with these poisonous creatures better than wizards?"

"But we ......"

"That only means that you are lucky not to encounter those toxins. ”

Horace Slughorn waved his hand impatiently, interrupting Justin Finchrie with some harshness.

"You're a wizard now, sir—if you're still going to argue with me on Muggle knowledge, I'd suggest you think carefully why you chose to study magic at Hogwarts instead of continuing your studies in the Muggle world. ”

Strictly speaking, Slughorn does not discriminate against Muggle-born wizards.

In his eyes, students can be broadly divided into three types: gifted and talented rising stars, celebrities who are still alive in the family who are worth befriending, and ...... Other ordinary students.

There is no doubt that Elena is clearly the top two overlapping items of the first two.

Although Harry Potter has the aura of a "child who never dies", due to the orphan factor, his rating in the heart of the old walrus has been slightly reduced. However, judging from Harry's current performance, if she inherited her mother's magical talent, she would still be ranked first on Horace Slughorn's "small list".

Other than that, the little Malfoy guy isn't bad.

Although the elder Malfoy, that is, Draco's grandfather, Abraxas Malfoy, unfortunately died of dragon plague syphilis, which made the entire Malfoy family once a pure-blood wizard family, a little disgraced. But over the years, under the guidance of Lucius Malfoy, he has gradually regained some voice in the wizarding world.

I heard that just some time ago, Lucius Malfoy even successfully joined the Hogwarts School Board.

As for this Mr. Justin Fenri......

Horace Slughorn casually glanced at the parchment beneath the lesson plan.

That was the final exam results of last year's batch of Hogwarts freshmen that he had so hard to get, and Justin Finchreiry barely ranked in the twenties, a good and not bad area.

Considering that this little wizard is from the non-magical world, of course, he should be considered another ordinary student—and the kind that is still at the bottom of the list among ordinary students, after all, this little guy just stupidly contradicted him.

"Mr. Fenrieri, I advise you not to play such tricks in the future, and not to try to find shortcuts in the non-magical world. ”

Slughorn cocked his fingers, looked down at the little boy, and said in a deep voice.

"The wizarding world has long had a complete process for dealing with potout-related potion materials, but unfortunately there are no corresponding materials in the classroom, so I can't show you the information, but you can look it up in the library - in the future, before questioning and mentioning it, it is better to study Miss Granger, at least from magic books, not Muggle knowledge. ”

"I'm sorry, Professor, I'll pay attention later. ”

Justin Finchrie's face turned a little red, and he looked helplessly at his silent companions around him, and sat back in disdain.

Whether in the non-magical world or in the wizarding world, students can always clearly feel the attitude of the professors.

After clearly sensing the impatience in Slughorn's tone, even the little wizards who had a slightly better relationship with Justin Finchreel in the past did not help to refute at this time, and a low laughter rang out in the classroom.

Is...... It's too realistic to be a social person, Professor Slughorn.

Elena raised an eyebrow and looked playfully at the old wizard who had judged the two of them.

Unlike the students who didn't know Slughorn yet, she knew Slughorn's personality too well.

This is how the old wizard was treated differently in this way when he was in the original book - although Horace Slughorn was not a person with any ill intentions, neither in terms of student education nor in terms of major rights and wrongs.

But in Elena's opinion, this overly snobbish division makes people a little unpleasant after all.

Not to mention, if you talk about family background alone, Justin Finchrie, who almost entered Eton Middle School, is one of the few "true nobles" in Hogwarts, which is one of the reasons why Elena remembers this little transparent.

Although under normal circumstances, the power and status of the non-magical world do not have much significance in the magical world.

But when the accumulation and continuation of a family is long enough, especially when the two worlds begin to show signs of merging with each other, the "aristocracy" class like Finreli is particularly important - just that summer vacation, some of the Finleri family's inheritance has appeared on Gringotts' attention list.

When the time is right, they will serve as the first bridges between the two worlds.

And in the process, the attitude and stance of a young wizard like Justin Finchrie may not be the key point that will lead the world change, but it is not completely insignificant, and more importantly......

Elena glanced meaningfully at Horace Slughorn, the corners of her mouth slightly raised.

Times have changed, Professor.

"Actually, I can help answer Justin's question, Professor. ”

Just as Justin Finchreeli lowered his head in disdain, looked at the textbook in front of him, and awkwardly avoided the sight and low laughter of the students around him, a few beautiful voices suddenly floated from the lectern in front of the classroom.

"The non-magical world is not much behind in the study of the toxicity of tetrodotoxin than in the wizarding world, and more precisely, they are even slightly ahead of our current textbooks in the study of the dangers and toxicity distribution of tetrodotoxin. ”

Sister Elena?!

Justin Finchrie quickly raised his head and looked expectantly at the front of the classroom.

I saw Elena draw her wand and wave it lightly on the edge of the blackboard.

The next moment, the pattern of a puffer fish appeared in front of everyone's eyes, accompanied by Elena's explanation, gradually transformed and decomposed on the blackboard, disassembled into parts, and a series of text descriptions were embellished next to the exploded picture.

"According to the latest research in the non-magical world, the toxicity distribution of puffer fish is mainly composed of the following five characteristics......"

"The first is that the amount of poison in the fish varies in different parts. Generally speaking, puffer fish has the most ovaries, followed by liver, blood, eyes, gills, and skin, and the muscles actually do not contain tetrodotoxin. However, after the death of a puffer fish, the toxins in the internal organs may seep into the muscles, resulting in occasional small amounts of toxins in the muscles......"

“...... (There are four points left, click here to expand)"

Elena paused slightly, and looked at Horace Slughorn with interest for a moment.

Unlike Justin's impatience when he had spoken, the Potions professor didn't interrupt her, but looked at her approvingly, looking with interest at the board book that the girl had drawn on the blackboard in Potions class with magic.

Tsk, tsk......

This is really a difference to the extreme!

As a vested interest in all evil, Elena pursed her lips with a complicated expression.

One thing is certain, though, that Horace Slughorn is obviously more tolerant of gifted students than Severus Snape, and doesn't have that much obsession with Potions itself, in that case......

"In addition, the puffer fish meat is delicious, tender and thornless, and has a very high protein content. ”

Elena was sure in her heart, and the wand in her hand turned, and she continued solemnly.

"As a top-notch seafood with more nutritional value than other fish, it is very meaningful to understand the value of puffer fish by understanding how it is treated with toxicity and simple cooking precautions. ”

Well?

Uh-huh?

Horace Slughorn blinked in confusion.

How did he think that there seemed to be something wrong with the little witch's words just now.

However, before he could realize that something was wrong, Elena had already begun to introduce with an excited face.

"Generally speaking, fish are freshest within 4-5 hours of death, after which the meat becomes stiff and affects the taste. ”

"The puffer fish is different, its meat is firm, and the meat will soften after 24-36 hours after death, and it is the best to eat at this time, and it is also the most smooth and tender taste, now you can feel it first......

Belch?

Feel it?

What is ...... called? Feel it?

Before Professor Slughorn could make an inquiry, the next moment, a mist suddenly rose from the Potions classroom.

With a series of faint magic fluctuations, two large golden dinner plates appeared on each desk in the underground classroom almost at the same time, and in the center of the golden dinner plate was a cup of snow-white soup with an enticing aroma.

Similarly, at Slughorn's lectern, an identical set of golden plates appeared.

What is it......

Slughorn raised an eyebrow and picked up the delicate little bowl to take a closer look.

In the white and milky soup, there are a few slices of crystal clear fish meat floating, and the rich fish soup is fragrant, with a faint hint of milk and beef, and the small bowl is slightly shaken, and the gelatinous viscous soup makes people can't help but swallow their saliva.

"It's just a very simple puffer fish soup, and the Hogwarts kitchen has been boiling since the morning. ”

Elena waved her hand rather casually and sniffed the soup bowl in her hand with satisfaction.

Sure enough, it was in vain that she deliberately spent her effort to purchase a batch of puffer fish, and asked Gilderoy Lockhart to lead a group of non-magical chefs to help guide and deal with it, this delicious and mellow aroma of fish soup is really the most delicious soup in the morning.

Of course, the reason for purchasing this batch is not to eat puffer fish.

As the head of Hogwarts, Elena was originally responsible for the procurement of Hogwarts teaching materials.

In Potions class, many potions are used on various parts of the pufferfish, and considering the cost of accounting, it is obviously quite reasonable to purchase a batch of puffer fish directly from professional breeding farms in the non-magical world.

"In order to enhance the umami, I asked the kitchen elf to add a small amount of butter and milk to it, and in addition, except for a little white pepper and salt, there was no additional addition, the most original puffer fish soup. ”

With a slight wave of her wand in Elena's hand, the book on the classroom blackboard changed again.

The main body of the puffer fish in the corner quickly grew larger and cut into pieces, and then a series of trimmings, cutting, manipulating, and cooking techniques emerged around it, echoing the swelling potion boiling process on the other side of the blackboard.

"Wait, this, I mean, this soup - Hogwarts kitchen?"

Slughorn held the steaming bowl of puffer fish soup in his hand, and was a little confused for a moment.

"Oh, I forgot to introduce you, I'm the head chef of the Hogwarts kitchen, Professor. ”

Elena blinked her eyes in a sudden realization, blew on the hot soup in her hand, and explained briskly.

"Don't worry, it's a new tradition of Hogwarts Potions. Whenever new potions are involved in teaching, the Hogwarts kitchens will introduce a corresponding or similar style of dish under the guidance of the Potions professor. ”

"This is mainly to increase people's awareness of potion materials...... Professor Dumbledore agreed. ”

Elena said as she raised the soup bowl in her hand and took a sip.

"Professor, drink it while it's hot, it's a Hogwarts specialty—there's still nearly twenty minutes or so before the second reaction time of the swelling potion, and when you're done with the fish soup, you can take everyone to deal with the pufferfish. ”

"Processing...... Pufferfish?"

The smile on Slughorn's face stiffened slightly, and he repeated politely.

"Yes, didn't you just say that wizards know how to deal with puffer fish better than Muggles, but they are limited to the lack of people in the classroom who can demonstrate and learn, so they can only consult the books after class?"

Elena winked mischievously at Justin Finchrie, who was not far away, and then looked up at the old wizard.

"It's a coincidence that there happens to be a batch of unprocessed puffer fish in the Hogwarts kitchen......"

As the girl's voice fell, a large box suddenly appeared in the open space at the front of the classroom.

The crate was filled with pufferfish that had been magically euthanized, and dozens of dull fish stared at Slughorn dumbfounded.