“CBC Microbiologist David Levin, on bacteria that convert paper cup waste to ethanol: ‘They like the Tim Hortons cups better than the Starbucks cups. It’s not that they don’t like the Starbucks; it just takes them a little bit longer to break them down and convert them.’”
–Biofuels Digest.
You’d think this were obvious, because caffeine drinking and alcoholic beverages act in opposition to each other, but that common-sense understanding of the drugs is not really true.