5:07 p.m. on May 5, 2012 (EDT)
I almost never cook while hiking.
I am a 'minimalist' ... NOT an ultra-light'er. Don't use a tent (I use a bivy sack). No cooking gear.
My approach to food is studied. I am a vegetarian ... or, more accurately, a piscaterian (eat some seafood).
My friend, a former Navy S.E.A.L., informed that "food is fuel".
With that in mind, along with thoughtful planning and selection of dry food-stuffs, I have hiked as long as 10 days (Appalachian Trail) without re-supply, or need to leave the Trail environs. Modest pack weight was the order-of-the-day. Although, never one to strive for high-mileage on trails, apparently I cover more miles than most. Not my goal. I enjoy the journey and the vistas. I can enjoy hot coffee and cooked meals when back home, or off-trail. I can't hike in a Starbucks or a pizza-joint.
One MUST ingest adequate protein, fats, carbs (along with water) to maintain energy and endurance.
PROTEIN -- or, more accurately -- the LACK thereof, is what impacts most of us. Fats and carbs are 'no-brainers'.
KNOW YOUR BODY !!
I have a fairly low Body-Fat Index, and a high BMR (Basal Metabolic Rate). I am fit. I understand my body's needs, in regard to longer-term (one week or more) dietary considerations while in the "backcountry".
Research (use your local library, and do not depend entirely on internet information) ... consultation with a sports-medicine physician ... and consultation with a qualified nutritionist, CAN provide one with just about all the 'facts' and suggestions for what food to take along while hiking, backpacking and camping. Learn about 'edibles' along the trails.
Most here spend inordinate time researching gear and reading gear reviews. Spend 'the big-bucks', too. How much time is spent researching fitness and nutritional needs? Get a proper physical examination and evaluation. Money well-spent. Your medical insurance may cover all or part.
I have formal education in nutrition; but, I am NOT a licensed nutritionist. Therefore; I am NOT going to outline any specific diets here. I cannot afford to defend against lawsuits.
I have to smile when I think about what food I packed, when I started trail hiking back around 1955. Quite a few hard-boiled eggs and baby-food (in glass jars), along with what we now call "gorp". Home-made, of course. Hard cheeses. A lot of (heavy) fruit. Peanut butter. French baguettes became 'brick-bats' unless eaten within a day-or-two. Something to gnawl on, while hiking.
~ r2 ~