Let cool 10 minutes, then release cake from pan and transfer to a wire rack to cool completely. Once cooled, if desired, stir together confectioners sugar and 1 tablespoon water until smooth and ...

"It's a boy," Aoki happily said with blue cake icing all over his face. "We have a little boy." Gabe Ginsberg/Formula 1 via Getty In the caption, Aoki wrote that this was "The most important cake ...