It would be nice if you could add in some extra ingredients without too much punishment as long as you still follow the required rules. Such as: +$ for perfect match. Nothing for wasting ingredients. Bigger -$ if you give something you shouldn't (Ex: butt potion vs skeleton).
Could also have some adventurers start asking "Where can I find ____ effect?" and then directly sell them that effect for bonus/story? Your shop keeper could claim they figured out how the dungeon traps give their effects and are selling them.
Good luck with your game.
So uhhh. This happened? For some reason theirs didn't cast when it got to zero and when I casted it didn't switch to next screen. Playing on win11 firefox