Deer's tongue is a type of grass used in some pipe tobacco blends. There is a small jar of it at my local tobacconist. They might add a pinch of it to a pound of a blend. It has a coumarin type flavor to it, like sweetgrass. I tried to emulate this by putting zubrowka in some tobacco. It turned out fairly nice. Oddly, it smelled like apples; strange because zubrowka is often mixed with apple juice or cider.
I was wondering if anyone has grown deer's tongue, and whether it requires a curing process, or if it is simply dried out.