Even better, there's nothing BUT tea. That's what happened to the coffee, some poor sod was trying to impress the MACUSA's resident magizoologist by turning coffee into a nice earl grey but they massively overdid the spell and now ALL the coffee in the building is tea. Newt is a little confused but mostly grateful that people like him enough to make such a sweet gesture, even if they did go overboard. Of course, he's more than willing to share

Graves is going to kill the people that did this as soon as they're out of Newts sight because he is not having a good decade.