Citrus-Vanilla Chiffon Cake

Torta Fluffosa is what Italians have taken to calling chiffon cakes, those cakes that are baked in tube pans and rise tall, with a fluffy, foamy crumb. This one is so impossibly light that you’d never know it contains eight eggs. The key to achieving its airy stature comes down to several factors: tender cake flour, a generous amount of baking powder, o…