I have decided after thoroughly researching this, that this is a must have on the trail to stay nourished. I know Yerba Mate is not much use though in tea bags, it must be prepared properly, preferably with a gourd and bombilla (special filtered straw) in order to get all of the value from it. If you are taking it with you, I am curious how you are traveling light and still able to properly prepare, I am nervous about getting an all in one thermos to make it in, because of cleaning and lack of nutritional value in its lower-end prep system. Anyone using it that has solved this problem? I would certainly appreciate your wisdom!