WRT portions -- my understanding is that you should work backwards, i.e. first getting an estimate of the amount of food (fuel) you'll need to burn. My estimate is 3 000 - 3 500 calories/day. I also know that I need close to a week of complete autonomy. The back of the envelope estimate is 2 pounds per day (900g). What is not clear to me is how large a container is required. (2 x 7 -> 14 pounds of Cheetos would require a fairly large bag). Important to me because I'll travel in a bear/minibear country such that my food should fit inside my 11L Ursack. My understanding (from reading Ursack's marketing blurb) is that 11L will hold enough food for 5 days x person -- one day short. I might be able to squeeze 6 days (the seventh doesn't have to be stored because it is eaten before bears can get to it), but that won't happen without some planning. Which is why I am googling nutrition facts
