The ‘light-as-air’ lemon cloud cake I tested 13 times

For some, the number 13 is unlucky. But not for this cake. That was the magic number it took to get it just right. Thirteen tries to reach soft, cloud-like perfection. Light, fluffy and delicately tangy, this lemon cloud cake is the kind of treat that feels fancy without being fussy – and the ingredients are probably already hanging out in your kitchen.