Milk and Art.
Latte art is a method of pouring steamed milk into a shot of espresso in a certain way, resulting in a pattern or design on the surface of the drink. It can also be created or embellished by simply “drawing” in the top layer of foam using a toothpick or similar implement.
These aforementioned methods are the two main types of latte art: free pouring (creating the pattern during the pour) and etching (using a tool to create a pattern after the pour).
Free pouring is far more common, and has resulted in the two most commonly seen latte art patterns —the heart shape and the rosetta, a fern-like design.
Latte art is made possible by the combination of the crema (which is an emulsion of coffee oil and brewed coffee) and the microfoam, which is a foam of air in milk.
What you need:
Feel up your 12-oz pitcher with around 10 oz of milk
Place your pitcher so that your steam wand is aimed just below the surface.
Move the pitcher so the steam wand is higher, lower, close to the edge or further from the edge in order to incorporate air into the milk and break up the larger bubbles. The bubbles should get progressively smaller.
It will be good to swirl the pitcher in a way you create a whirlpool motion in the milk. This will cause the froth to be evenly mixed throughout the milk.
Turn on the steam valve to purge the wand, some of the milk will be stuck inside the wand. This will affect the taste of the subsequent batches of milk, also it will interfere with the frothing process. While the steam ward is still hot, use a wet cloth and wipe it down.
Tap the pitcher firmly on a flat surface to remove large bubbles. Give it a few swirls around the pitcher to give it a paint like texture.
To achieve a nice design. Hold the cup on a slight angle, with the back of the cup raised up the edge of the cup , begin pouring your milk slowly. Begin with a thin stream to avoid breaking the crema. When your drink is about half full, lower your pitcher so that it's almost touching the coffee. This will help with the development of the latte art.