Ron's words had an unexpected effect. Harry agreed after a few seconds of silence. It was so smooth that Ron himself didn't expect that he thought he would have to spend more time to convince Harry.

For the rest of the class, they did not mention Slughorn's party again. In the following days, Harry's enthusiasm for this matter quickly surpassed Ron.

"Harry, are you crazy? Are you planning to make your own decoction?" Ron asked in an incredible tone.

"You came up with this idea," said Harry. "Don't worry, compound decoctions are not very difficult to cook."

"Your progress in potions made me amazed." Ron wiped the cold sweat that did not exist on his forehead. "Professor Slughorn said that if the compound decoction is not cooked properly, it will cause big problems. I think we should ask George and Fred, the mail-order compound decoction is better. They sell this product in the store now."

"That's just a deteriorated version of the toy, and it can only last for five minutes," said Harry. "I've written a letter to ask George and Fred."

"Then why don't you ask them to buy some ready-made ones in Diagon Alley?"

"Because I'm not at ease, I want to make sure that this compound decoction is foolproof, so I'm going to cook it myself."

"So where are you going to cook it?" Ron felt that Harry must be crazy. "Compound decoction is not a potion that can be cooked in two classes. The main ingredient has to be cooked for 21 days! It's too late, Harry."

"I naturally have a way to do this, but it takes a lot of ingredients to make a compound decoction, such as worms, lees, flowing grass and bi-ear grass, which are easy to get. Students have it in their storage cabinets, so we can get it ourselves. As for the horns of the bi-horned beasts that are ground into powder and the snakeskin fragments of African tree snakes, there is no way, we have to find a way to get these."

"Can't you buy it directly?" Ron said.

"The horns of the horns ground into powder may be available, but the snakeskin of the African tree are not necessarily the case. Maybe we have to steal some from Snape's private storage room."

"Harry, there must be other ways." Ron shook his head. "It's not a good idea to steal things from Snape's private storage room. You can ask Slughorn directly, you're his little prince of potions,"

"We are going to Slughorn's Christmas party. I asked him for the ingredients for the compound decoction, and he could easily find it." Harry shook his head, "Let's do this, next dark magic defense class, I'll take a leave, and then go to Snape's private storage room to steal the two ingredients."

"Harry, can I withdraw from this plan now? I don't want to sign the head office."

"No," said Harry, "this idea was made by you."

"Harry, I must have been possessed by the devil when I came up with this idea." Ron looked at Harry, "Can't you really go back on your word?"

———————————————————————————————————————————

"The compound decoction has been boiled."

In an abandoned bathroom in Hogwarts, Harry and Ron were looking at the crucible in front of them, and they heard the bubbles, thick syrup-like decoctions buzzing in the crucible.

"It's incredible." Ron took a book called "Pictures of Potions" and turned to the page of Compound Decoction, comparing the decoction in the crucible in front of him. "You really did it, Harry, I cooked the compound Decoction in two days. How did you do it?"

"A little secret." Harry took out two flat glasses, "Are you ready?"

"What should we do?" Ron fell into a glass with some difficulty, "Can you drink it directly?"

"We'll divide it into two cups and add hair in." Harry pulled out a few hairs from his head and handed them to Ron. "I've asked Neville to borrow a few hairs. He'll stay in the dormitory all night long and no one will find it."

“It sounds so seamless.”

Ha used a long-handled spoon to scoop up the decoction and poured it into each glass. Then, he poured Neville's hair from the bottle into the first glass.

The decoction sounded like a pot of boiling water, and it was foaming vigorously. After a second, it turned into an ugly yellow color.

Ron's face twitched unnaturally: "I guess it must be hard to eat."

"Okay, add to yours," said Harry.

Ron put Harry's hair into his cup. The cups were hissing, bubbled, and finally turned into a dark dark brown color.

"Are you ready?" said Harry, "Cheers."

"Cheers." Ron's hand holding the cup was trembling.

"Compound decoctions are not very delicious, but this time we have to drink them all at once. The party will last about four hours, so we have to drink all these potions, otherwise it will be bad if we get through the process." Harry stared at Ron, "Slughorn will definitely catch me. If you feel the effect of the medicine is about to pass, you will say that your stomach hurts and you must go to the bathroom. Don't be discovered by Slughorn."

"Don't worry, I'll find a way to sneak out after I want to sign, and it won't delay until the medicine is over."

"That would be the best."
Chapter completed!