Question: how much caffeine in a grande starbucks doubleshot?
Answer: The Starbucks manager is instead referring to the Starbucks Doubleshot on Ice you'd get in the store, made fresh. "The Starbucks Doubleshot is cheap and potent," she says. "Iced coffees have a lot of caffeine and are cheap." She's not kidding -- the Doubleshot on Ice has 225mg of caffeine.