Double tall epiphany

A real cappuccino bears little resemblance to the Starbucks tall cappuccino. In Europe, they make them much smaller--basically, teacup sized--with a higher ratio of espresso to milk.* That's how I like them (because I see milk as basically a caffeine delivery device), so at Starbucks I usually ask the barista to give me a double cappuccino with lots of room. End result? Stronger, less milky drink.

Now I learn that one can actually order a "short" cappuccino at Starbucks. It's an 8 ouncer, in a smaller cup, making it more like a traditional cappuccino. It isn't on the menu, and Tim Harford at Slate explains why.

*Also, they do a much better job with the foam.