by another_jim on Thu Dec 03, 2009 3:54 pm
You can pour everything from a faint Halloween ghost heart, through a finely detailed rosetta, a plain solid heart, a classic Italian cappa, to a cappa too far, all from the same frothed milk (if you used a machine fast enough and a pitcher big enough). Here's why:
Foam bubbles expand. If you let the pitcher stand, the foam will get thicker and lighter. If you swirl while doing it, it won't separate.
If you watch some barista competitors, they'll foam without doing a lot of teasing, and then pour first finely wrought leaves and then solid shapes from the same pitcher. I do minimal stretching on my milk (no tearing, sucking or any other sort of sound except a small hiss), finish the shot, clean the wand, swirl and pour. This is not very controlled, sometimes I get fine detail, sometimes a solid shape, depending on how long the shot. But I like the mouthfeel differences in any case.
The taste of food depends both on its appearance and its texture; so even the best cappas still have to pick a compromise between finely etched art and scrumptiously layered foam.