And the results are in!
Without further ado...
...it was ginger ale. :) We didn't use champagne or sparkling wine because the bubbles are so small that they don't photograph very well at all. It tends to look like beer, if you can believe it!
Here's how the picture was taken. A champagne flute was placed on a peach colored gel (as in a see-through colored plastic sheet for photography) on top of a light box and in front of a black background. The camera (shooting film, not digital) was placed in front and adjusted for a shutter speed on the slow side (I don't know the exact setting of this transparency). The strobe lights (also gel'd) were set to fire when the camera shutter opened. Some ginger ale was placed in the glass and then, before each shot, I freshened it up a bit, which created more bubbles. The slow shutter speed, coupled with the pop of the strobe lights, captured a bright bubble followed by a long stream as the bubble moved up while the shutter was open.
Those of you who mentioned hair gel and other substances in which bubbles might be suspended were not far, however, from how some shots are accomplished. There are model makers who specialize in acrylic spills and other types of models that approximate liquids - just for ad shoots. Cool, eh? :)
So here's what I did with the contest. I entered everyone who answered that it was a sparkling liquid that would have produced the same results as the ginger ale. In other words: it had to have the right kind of bubbles and also be the color of champagne or sparkling white wine (including cream soda, sparkling grape juice, apple juice and sprite...). Then I went over to random.org and generated the number 4. Sharyn was the 4th commenter who guessed correctly. Congratulations, Sharyn! Email me at romiATdesignsbyromiDOTcom with your address please and I'll send off your pin!
Thank you all for playing!
And thanks, everyone, for the kind words about my new profile pic. I didn't think anyone would notice! You guys are the best. :)