What is that clear drink i see everyone drinking from starbucks? its not water, i think?

Question

What is that clear drink i see everyone drinking from starbucks? its not water, i think?

Answer 1

vodka :p

Answer 2

its like flavored water

Answer 3

I see nothing on the "beverage lineup" at:

http://www.starbucks.com/retail/beverage...

Unless it was possibly apple juice

http://www.starbucks.com/retail/beverage...

If it was in a bottle it was probably Ethos Water:

http://www.starbucks.com/retail/ethoswat...

Answer 4

It probably is water.

I don't recall of Starbucks selling any completely clear drinks besides water.

The people you saw just probably had gotten some regular water from starbucks.