Milk frothers aerate milk, creating tiny microbubbles that lend a light and creamy texture to milk while increasing the overall volume. Various techniques used while frothing result in different kinds of foam from velvety smooth textures for lattes to fluffy foam for cappuccinos. Depending on the type of milk frother, it may aerate through agitation by pumping or whisking milk vigorously, or through rapidly moving hot steam.