“Ninety-six hours,” retorted Severus, as he noticed the unfamiliar-looking woman sitting in his kitchen shrill with suspense. If there was one thing Severus didn't particularly like—disregarding Sirius Black—it was revealing his secrets to others. Though, he hadn't been that removed from society since his early years at school; thus explaining his small diary containing a variety of his spell and potion creations left in the care of Horace Slughorn's classroom. Filling his lungs with the dusty air around them, Severus exhaled slowly before nodding his head in acceptance. “Well, as egotistical as I can be, it really depends on those who brew it. I would trust one with a steady-hand and a forgiving appetite. You will need to conjure a very basic, though highly concentrated Polyjuice and add these exact variations—” Severus' upper-lip lifted in satisfaction, as he removed a tapered scroll of parchment from the same knapsack that he retrieved the potion from. “I had a nagging feeling you weren't looking to risk a second trip back here no matter how dire the situation at hand may be.” On the scroll read the ingredients printed neatly in Severus' hand-writing. As Lily became more comfortable with the thought of feeding Harry the potion, Severus, though slightly against doing it at this exact location, took the vial containing freshly plucked hairs and set them down next to the bottle of milk. Unlatching the cap from the bottle of milk, Severus quickly dabbed a fourth of the brew into the pearly mixture. Before swiveling the cap back on to the bottle, Severus savored the hair samples by isolating one small strand and dropping it into the bottle of milk. Tightening the cap, he gave it a nice swish before handing it over to Lily and cleaning up the remaining items sprawled about the kitchen table.