[She lifts the lid off the top, it's about half full.]

Enough to fill this, preferably. The more I get the more lye I can leech out.

[She puts the lid back on. A frown pulls her eyebrows down.]

Pan doesn't need to be huge. Can't be used for anything other than lye, but it doesn't need to be big. A decent funnel and a pickle jar is more than enough.