You just reminded me I was going to sprinkle some fresh corriander on my fish curry last night. I guess it is a bit late now.

I chop and freeze a lot of herbs, including corriander. I mix them with oil and freeze them in ice cube trays. You can also add water if that suits your recipes better, but I am usually adding oil anyway and because the oil is a bit soft you can chop a cube in half if you need to.