"Stirring rod, you dunderheads. We use stirring rods and ladles in this class. You are not first years, I expect you to know something, anything. There will be no hand waving while I'm speaking. Potions is a science, blended with an art. It takes time, strict attention to detail, talent, and perseverance. Potions brewing is steeped in a tradition dating back before Merlin, possibly before the ancient Egyptians. Consider the great alchemists through history who possessed great power and almost religious devotion to their craft. Detentions for anyone who fell asleep."