Aerolatte Chef's Multi-Purpose Frother, Kitchen Whisk and Salad Dressing Emulsifier Mini whisk frother with variable speeds for control Works wonders on dessert sauces like custard, mousse and zabaglione Use to make sauces, soups, dressings and drinks Mixes egg whites and makes fluffy meringues; ideal for vinaigrettes, balsamic and salad dressings 2 AA Batteries included