Rose Levy Beranbaum, in her book, “The Pie and Pastry Bible,” a volume which I’ve read religiously, says, “There are two kinds of people: cake people and pie people.” All my life I’ve believed I’m in the second category. I even served once as a judge at the National Pie Championships sponsored by the American Pie Council, of which I was a charter member. So it shouldn’t be surprising that I’ve always regarded cake as little more than a delivery system for frosting. Recently, however, I came