|L to R: Cilantro, green coriander, mature coriander|
Think cilantro, but some sort of wonderful perfected and glorified cilantro with a lemony almost fruity flavor to it, what cilantro wishes it was but never quite is. In short, I basically don't harvest cilantro leaves any more. I plant it, and wait eagerly for it to bolt, so I can harvest these little nuggets of happiness. Pick them when they are little plump green balls, but before they start to turn brown and toughen. The plant will produce for a surprisingly long time, a couple months for me, if I keep them harvested. I'm careful, however, to never harvest them all, because left to their own devices, they'll self-sow, providing me wonderful flavor every year with essentially no work.
Green coriander is great in anything you'd put cilantro in. It is wonderful with beans, tomatoes (salsa!), and almost anything involving lemon or bacon. Try it in your favorite pasta or potato salad for instant happiness.