Fresh mint is a great cooking resource; expect to see it again in a few more recipes. You can buy packaged bunches of fresh mint sprigs or potted mint plants in supermarkets. The plants can survive a suprising amount of neglect (unlike, say, basil), thus they’re compatible with nerd kitchen. Of course, once you’ve discovered fresh mint for yourself, you’ll likely consume your plant to stumps before it has a chance to wilt.
The most straightforward use is to give a handful of mint sprigs a quick wash and then steep them in piping hot water. Sweeten to taste (honey is traditional, but artificial sweetener works just fine too). Voilà: fresh mint tea. Try it; it’s quite different from the dried mint that comes in bags.