I plan to use one ounce of fuel per day and usually don't burn all of it. I am usually solo and am a boil water and soak type of cook. All my meals are pre packaged and will rehydrate in boiled water in a freezer bag (actually a Ziplock storage bowl) in an insulated bag. Here is how I cook: breakfast, boil 1.5 cups for coffee and 1 cup for cocoa; lunch, no cooking but will sometimes brew a cup of tea; dinner, boil 1 cup for soup, 1.5-2 cups for main meal and 1 cup for herb tea. As I noted it averages out to a little less than an ounce per day. Most of my hiking is in western mountains and seldom below 6500' elevation.
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May I walk in beauty.