Whisking matcha in a shared office can draw stares. The key is to be efficient: pre-sift the powder, use a small bowl or a dedicated mug, and whisk quickly. If you're worried about noise, a portable frother is quieter than a bamboo whisk. And if you're not into explaining your ritual, just brew it in a covered travel mug—no one needs to know it's matcha.

Another discreet tip: keep a small measuring spoon in your desk so you don't have to guess. And if you're worried about stains, use a dark-colored mug. Green tea stains are real, and they're a pain to scrub.