I have come across the work of photographer Ernie Button, Vanishing Spirits. He has photographed what has remained and dried at the bottom of a glass after enjoying a glass of single malt Scotch. The photographs are quite interesting and it makes a case for the importance of experimentation in photography. You never know what you will end up with in these experiments and some succeed and others fail, which is perfectly fine.
I think Ernie Button is on to something. I wonder which brand should I start with? ;-)