Vanilla Cloud Cake

Oh. This cake. Every time I serve it or share the recipe, I am told it is the best cake the person has ever had. It truly is something special and lives up to its ethereal name, with a serious punch of vanilla flavor. Have an empty wine bottle or similar vessel at the ready for inverting the cake during the cooling process—you want the pan to be high above the countertop so air can circulate all around as the cake cools.