This is a traditional manual way, the simplest and most efficient way, with no need for electricity or batteries. (More economical than battery-powered frothers and expensive electric milk frother). Put the milk into the pitcher, place the plunger inside and lid it, then please pump the handle up and down 20-30 times(within 30 seconds), until foam has desired consistency. Made of quality ABS and stainless material, eco-friendly, good toughness, and durable.Hand type design, more fast and effective to whip cream. The long crank is labor-saving and comfortable to grip. Detachable and easy to clean.Suitable for the homemaker, a great gift for your family, friends, and milk lovers!