Maybe they... smell different? Or– Hm. [ Rapunzel taps her chin, not looking, for the moment, at the other occupant of the room despite a gradual sense of deja vu descending upon her. She peers at the bottles in much the same way he did, though the range of her expertise is surely even slimmer...... ] Maybe that's the trick: no difference between them at all.

What happened to you the last time you - went through this?