Lemon-Scented White Chocolate Almond Cake from Anacapri

My friend Gary Peese from Austin, Texas, discovered this cake when he was vacationing at Anacapri in the Bay of Naples. It is similar to the popular torta caprese (a chocolate walnut cake that I gave a recipe for in Chocolate), but uses white chocolate, almonds, and a lemon flavoring. It is a specialty of the restaurant Materita on the island.

A note of caution about melting white chocolate: Melt it over hot, not simmering, water, stirring often, or the milk