An immersion blener is a kitchen appliance used to blend ingredients or puree food in the container in which they are being prepared. They are most often used for pureeing soups and emulsifying sauces while leaving the food in the cooking pan. Some can even be used without removing the pan from the stove. Immersion blenders are to be distinguished from tools such as the kitchen blender and the food processor, both of which require that the food be placed into a specialized vessel for processing, and the hand mixer which does not chop the food as it is blended. It is also sometimes called a stick blender, wand blender, hand blender or a Bermixer (after the brand name of professional models made by Dito-Electrolux, sometimes misspelled "beurre mixer"). In professional kitchens, where they can be quite a bit larger than in a home kitchen, they may also be affectionately known as a "boat motor."