Pouring latte art is as much an art as a science. Drawing a pattern of steamed milk on a fluid surface demands a steady hand, a vision and the proper foam. Microfoam is the medium of the latte artist and must be of the proper consistency. The physics of the foam is crucial. Latte artists seek to create a properly balanced foam, not too dry, not too wet. The ideal being a heavier, wetter foam controlling the amount of air so that the “bubbles” are not too large. To pour latte art, the milk should be shiny, slightly thick and have very small, uniform bubbles.