Honestly, it was probably Hange who clued him into the concept of black tea being a stimulant. He'd never had to think about it otherwise, so Erwin had been a bit of an experiment to see if it was true - Levi had started swapping their late afternoon black tea for mint instead, and Erwin had seemed to fall asleep more easily (not that it meant he tried to go to bed any sooner, sometimes, so Levi never quite lost the need to go chase his Commander away from paperwork late at night). Unfortunately, nothing seemed to change for his own mangled sleeping habits. Oh well.

He feels his toes curl a little for that touch, and briefly he can't help remembering the handful of times Erwin had helped wrap his ankle after his injury to capture the Female Titan. Being out of commission for weeks had been fucking miserable, but that had made it a little more bearable, before things got busy again.

And then he'd come back without an arm.

He sets the thought aside, sipping at his tea again, thinking. "Reiner gave me something called 'gingerbread spice.' Mostly ginger, but it's got some other stuff in it. It's not bad."

It's almost gone already, but details.