If I could get more authentic grain, the Lembas would work even better. And if Nerdanel makes it, well, that would make it truly magical. [and he is learning how to infuse some of his own power into it.]

It stores forever, doesn't need any fancy wrapping, you only need a bit to keep you going, and it can help refresh the mind as well as the body.

You had some during the mission? What did you think of it?