Frothing is the process of steaming milk, to create creamy, frothy milk for an espresso. Frothing / Espresso Pitchers are great accessories for any Espresso machine, and are essential for creating frothy milk with a velvet microfoam. These Frothing Pitchers are available in various sizes and are constructed from 18/8 stainless steel. They feature a seamless design with a convenient pour spout. Smaller super automatic espresso machines, such as home machines, have shorter wands and the 12 ounce pitcher works great for them. Commercial "semi-automatic" machines, on the other hand, produce a high steam power, and it is highly recommended that the larger pitchers are used.