Black as the devil, hot as hell, pure as an angel, sweet as love.

[Noir comme le diable, chaud comme l’enfer, pur comme un ange, doux comme l’amour.]

Charles-Maurice de Talleyrand-Périgord (1754-1838) French secularized clergyman, statesman, wit, diplomat

(Attributed)
    (Source)

Elements of a good cup of coffee.