For this
sophisticated cake, which will thrill any fan of bittersweet chocolate, Ferrigno took inspiration from a favorite Perugian café called Bar Sandri—Perugia being, as she puts it, the “firm historical chocolate capital” of Italy. And inspiration was all she could take: She requested the recipe from the chef several times, but he wouldn’t divulge it. Desperate, she played around with the ingredients until she came up with something that tasted right.