Deep into the night, the Defense Against the Dark Arts Office was still brightly lit. The fake Moody stared intently at the potion bubbling like mud in front of him, putting the finishing touches on it.
He poured the Polyjuice Potion into his curved hip flask, tossed a small lock of Mad-Eye Moody's hair into it for good measure, shook it gently a few times, brought it to his lips for a small sip, and then shuddered slightly as he rocked his body, closing his eyes for a moment to feel the potion's effect.
"This large cauldron of Polyjuice Potion should last until the end of this term," the fake Moody muttered. "However, I should be leaving soon. Next..."
Chapter 885