[Pblais]

Base on trips in the mountains that I used to do backpacking. The following is a minimal rule of thumb as far as how much and how long.

Two hungry people will generally be well fed with 2 full soup bowl sized portions of a stew or some such one pot meal. basically assume everyone will eat seconds. You might add a few things on the side or some type of desert. If you preceed the whole affair with two stiff drinks the evening goes just fine.

To really cook fast and save fuel you adjust the cook time. You can cook a one pot meal with minute rice or pasta with veggies / meat in one pot start to finish starting with cold water in about 15 minutes by just throwing the ingredients in as you go. Using a cover at the end let it stand a bit to save on fuel it will continue to cook and still be hot in 5 minutes. A three quart pot a is nice size. A good lid helps as well. All this and boiling water in the morning will use about 3/4 liter of white gas per week. Adjust fuel volume upward for alcohol downward for propane.