New-generation food processors often come with 2 or 3 nested work bowls. For optimal efficiency, use the work bowls in a way that saves on cleanup. For example, if your recipe calls for using multiple bowls, begin with the smallest bowl. This way, it will serve as a prep bowl to reserve the processed ingredients for a recipe.
Choose the appropriate-sized bowl and blade or disc for the task and amount of food being processed. For example, when making a carrot cake in the Cuisinart Elite 14-cup processor which comes with 3 nested bowls: