Reading Elena Ferrante’s Neapolitan quartet is a heady experience. You not only see, hear, know her characters — you can almost taste them. The villain of the first of the four books, which follow the friendship of mercurial Lila and striving Lenù from childhood into their sixties, is Don Achille, an ‘ogre’ who sweats the smells of ‘salami, provolone, mortadella, lardo and prosciutto’.