This portable handheld milk frother could make frothy milk in 20 seconds or less. Just put it into a container with liquid food up to approx 1/3 to froth. Please keep the temperature of the milk below 60℃ for perfect foam. The frother is powered by 2 AA batteries (included) and has an LED light. You can make fluffy foam from not only from cow's milk, but also alternatives, such as soy, coconut and goat milk. This frother whisk is made of high-quality stainless steel material.