Chocolate, coconut, lemon, strawberry, vanilla - she had a particular fondness for the classics. Even though she experimented with new flavors and frostings, drizzling with syrups and artfully arranging hibiscus petals, Gus more often took the retro route with piped-on flowers or a flash of candy sprinkles across the iced top. Because birthday cake was really about nostalgia, she knew, about reaching in and using the senses to remember one perfect childhood moment.