It could be a single ingredient. I am not blaming you, young master.

[ He gestures, checking it's okay for him to come closer into the little kitchen. It smells ... interesting. Having heard a lot of talk about witches since his arrival, he can't help the brief thought that flits through his mind that this is probably what their lair might reek like. ]

What did you put into it? Could anything have reacted with each other?