What is chiffon pie?
Chiffon pie is a light, airy pie made with gelatin and beaten egg whites. It usually has a ginger-based crust and is sometimes covered in a layer of whipped cream, to add to its light-as-chiffon reputation. Lemon chiffon pie is a famous example, but you can make a chiffon pie with strawberries, coffee, pumpkin, mango or other flavors.
Early chiffon pies were apparently called Sissy Pies (as well as Fairy Tarts, Fluff, Sponge and Souffle pies) in the early 20th century, when they were made by mixing pudding with egg whites and baking in the oven. Now, 21st century chiffon pies use gelatin to set the filling.
Chiffon cake is a light, airy cake made with oil (rather than butter) and beaten egg whites.