“You have not asked me, for instance, what is my favourite flavour of jam, to check that I am indeed Professor Dumbledore, and not an imposter.'
'I didn't ...' Harry began, not entirely sure whether he was being reprimanded or not.
'For future reference, Harry, it is raspberry ... although of course, if I were a Death Eater, I would have been sure to research my own jam-preferences before impersonating myself.”