Just a little ditty based on an old TV advert...
Harry Potter was laying on his four-poster bed, relaxing with a deck of cards that he had borrowed from Dean Thomas when Colin Creevey came bursting into the Sixth Year dorms, brandishing a bag that had been sent to him by his mother from a grocery store.
"Harry...harry...harry. I've got that drink that you wanted me to obtain." Colin shouted excitedly, throwing the bag onto Harry's bed. "There was enough gold to get at least 24 cans of the stuff for you, enough for your project."
"Cheers Colin," Harry said, smiling. As Colin left the room, Harry sent a Patronus message out of the door. A few minutes later, Hermione came running up the stairs, her hair still wet from the shower.
"Did you get it?" Hermione asked. "The additional ingredient?"
"Yep, enough for 20 versions of the potion." Harry said. "This will help us get extra credit from Professor Slughorn."
"That's great!" Hermione exclaimed. She looked over at the cans that had the ingredients they needed to make their potion work. "Will it really work?"
"If the notes from the Prince are right, then it should work within a minute of drinking it. Do you want to head down to Slughorn's office to try it out?" Harry asked.
"Yes, but I'm not going to try it. Especially if it's going to rip my robes into shreds."
"I'll do it then." Harry said, smiling. "I mean, normally there are procedures for live testing an experimental potion, but if this potion works... then we can sell it to the makers of the original drink for use in the Wizarding World..."
The two of them headed down to the Potions lab, and checked in with Professor Slughorn, who supervised the two of them as they brewed the potion.
Eventually it was complete, and Harry slipped off his shirt. Taking a sip of it, he felt an increase in energy. Suddenly a pair of wings grew out of his back.
"Well that proves it..." Hermione said, chuckling. "Red Bull does give you Wings!"