Color Changing Ice Cream

[halleyscomet.livejournal.com]

Sadly, I doubt this will work very well at Baitcon, seeing as how people use spoons as opposed to licking ice cream from a cone. While this could be used to monitor saliva cross-contamination during the running of the flavors, I'm not sure we WANT to know, especially given the general lack of "Con crud" from Baitcon.

Color-changing ice cream: Mix a physicist, dairy, and 'love elixir' (+video)