The drink is basically the coffee chain's Matcha Green Tea Latte with peppermint syrup. Specifically, it's matcha green tea, steamed milk, and peppermint syrup.
Matcha is finely-powdered, Japanese green tea.
The drink is available through March 20, although you can still get it after that date by ordering a Matcha Green Tea Latte with peppermint syrup.
