While we're on the subject of caffeine, lovingly referred to in our household as Satan's Brew, I have to note the following story. Portable Dipstick to Measure Caffeine.

While it might seem strange scientists would think to develop dipsticks to measure caffeine, how they're making them is even weirder.

How about three llamas and two camels.

These animals produce antibodies in their blood that react to caffeine. In the lab they were found to accurately indicate the amount of caffeine in hot coffee and also cold cola.

The scientists conclude:

You would not need camels or llamas to do this at home. The antibodies could be copied in the lab. You could even take the dipsticks into the coffee shop.

I've never ben in a coffee shop. Do they prohibit camels and llamas?