Vegetable oil and U.S. farmers started planting large areas that spring. Canola oil is lower in saturated fats, and higher in monounsaturates and is a better source of omega-3 fats than other popular oils. Canola is very thin (unlike corn oil) and flavorless (unlike olive oil), so it largely succeeds by displacing soy oil, just as soy oil largely succeeded by displacing cottonseed oil. A large quantity of used vegetable oil is produced and recycled, mainly from industrial deep fryers in potato processing plants, snack food factories and fast food restaurants. Recycled oil has numerous uses, including use as a direct fuel,
Chiffon cake harden or dry out as traditional butter cakes might. This makes them better-suited than many cakes to filling or frosting with ingredients that need to be refrigerated or frozen, such as pastry cream or ice cream. The lack of butter, however, means that chiffon cakes lack much of the rich flavor of butter cakes The recipe is credited to Harry Baker (1883–1974), a California insurance salesman turned caterer. Baker kept the recipe secret for 20 years until he sold it to General Mills, which spread the recipe through marketing materials in the 1940s and 1950s under the name "chiffon cake",