grassy tops of lemongrass
I've thrown it in (unchopped) with rice before cooking it and then removed it for eating. It adds a subtle lemongrass flavor. I have also tied it in a knot (to bruise and release oils) and chucked it in my water bottle. That makes a nice, lightly flavored water over the course of a day. I bet you could make tea with it as well.
Perhaps some of this might help? I only lemongrass here and there but it's nice stuff! So far, I've only used the stalks myself.