Jim Harriman of SpaghettiLogic.org has created an amazing family tree of drinks using each drink’s ingredients as genes. The result is pretty cool. Read his write up for more information.
I think this kind of analysis could really be very interesting if you added some more metadata to the party. Perhaps information such as Gary Regan’s drink categories. I think it could show some interesting relationships between cocktails. A project for the future indeed.
If you’re interested in some of the science here are some links you might like.
Phylogeny on Wikipedia
PHYLIP – The software package used to crunch the data