I took this photo last night:
I shot it inside of my DIY macro box (like this one:
http://strobist.blogspot.com/2006/07...o-studio.html)
To provide a bit more technical info: I fired my 580ex ii at 1/8th power through the top of the box. The steam from the Americano wasn't quite coming out the way I wanted it so I took it outside where it was colder and got a little more action in there.
Exposure: 0.005 sec (1/200)
Aperture: f/18
Focal Length: 50 mm
ISO Speed: 200