The classroom was clean as a whistle today. And at every workstation, there was a tidy little handout, with a title all in caps.
Wonka paced in front of the classroom.
"This sweet is, quite possibly, my pride and joy. And, should you misuse this knowledge, you could destabilize the entire dessert market." His eyes glittered, clearly much more amused than dismayed by this idea. "Gobstoppers are a simple, layered hard candy. You may know these as 'jawbreakers,' but we will be leaving that rather unfortunate term outside of the classroom. Gobstoppers can last days, or even weeks. But mine-" he held up a small, violet candy- "-never shrink the slightest bit. At least, in the past fifty years, the test gobstopper has never shrunk." He set the gobstopper back on his desk.
"You lot can choose your own colors and flavours, or follow the recipe if you're feeling skittish. However! You will have noticed that there is one blank line." He held up a copy and pointed to a line marked '??? ground up- 10 grams.' "This is where I put my secret ingredient, the one that makes the candy last forever. I'm not going to tell you what it is, because that wouldn't be any fun at all."
He put the paper down and stood up. "No, we're going to put those brains of yours to work. I will, however, give you a very large hint." He leaned forward, conspiratorially, and stage-whispered, "do you know how sometimes, when you don't want to do a thing, it seems to last forever?" He shrugged. "Phone conversations with very extended relatives? Waiting in line for an appointment you didn't want to keep anyway? Homework from another class that you aren't quite keen on completing tonight?" He grinned. "Grind them all up, and add enough sugar, and nobody can taste it under the sweetness."