A steam wand is a tool commonly found on espresso machines, used to froth and steam milk for beverages like lattes and cappuccinos. It works by releasing steam from a nozzle, which heats and aerates the milk, creating a creamy texture and rich microfoam. Steam wands typically have a metal construction and are positioned at an angle for easy maneuverability. Users can control the steam pressure and temperature, allowing for customization of the milk's texture. Proper technique is essential for achieving the desired froth, making steam wands a vital component for baristas and coffee enthusiasts alike.