by Nick on Fri Sep 17, 2010 12:34 am
Frankly, most professional baristas who do it do so because someone showed them the technique and they just copy it without thinking much about it.
While pouring latte art, it's generally good to have a good as-dark-brown-as-possible base to then draw your white milk-foam art on. You're generally drawing with the white design at about half-way full in the cup.
If you're relatively inexperienced at latte art, you can make the "mistake" of not having a well-formed coffee-stained-milk-foam brown base before you wiggle the pitcher to draw your art, in which case the art won't form as desired. Pouring a little from the milk pitcher into the espresso base and giving it a swirl helps establish this base, as well as promote a more "flat" brown base as well.
Hope this helps.
Nick
wreckingballcoffee.com
nickcho.com