Hi rhysmacallister,
On the stoves. Todd Bibler (of the old Bibler stoves and Bibler tents, now Black Diamond Tents) showed me this trick in about 1995: Buy a piece of hollow thin-walled copper tubing, you’ll need 50cm or less. Pound it flat. Then cut the length so that the ends of the copper are on the edge of the flame and the middle of the length of tubing wraps very tightly around the base of the fuel canister. Then use an old foam sleeping mat and tape to make an insulating cup for the fuel canister that also will keep the flattened copper heat-transfer tubing tight to the fuel canister. This works great. Much better than any other system I’ve seen.
Secondly, food. Here is my system:
Breakfast: 1-2 bars that go well with my tea/coffee. I like a hot drink in the morning but don’t want to cook anything.
Lunch: Starts shortly after breakfast and extends until shortly before dinner. What you bring will depend on the intensity of the climbing. If you are moving fast and working at a high intensity, you’ll want mostly easy to eat carbohydrate gels. If the climbing is slow and technical (like the route you did on the P. Dru) then you want more variety, in this case I might actually bring things like bread and cheese. And nuts. I always bring nuts. It’s up to you if you bring dried fruit as well, I like raisins and apricots. But nuts, especially roasted (not salted) almonds, are my favorite. I also like (toasted) walnuts and cashews. Chocolate is something I’ll bring if the climbing is slow, but not if the climbing is fast. If the climbing is fast then the sugar in the chocolate makes me crash.
Dinner: I do it like this: Have nuts available for the pre-dinner snack and start eating as soon as the stove gets turned on. You can’t digest nuts well if you’re working really hard, but now that you’ve slowed down and can start to drink again, the nuts will get you a good balance of fat and protein to kick start your recovery. If you’re going super-light, try a ‘recovery drink’, I like the “chocolate smoothie” Recovery Brew from GU Energy. This is the lightest option and has stuff like Branched Chain Amino Acids (BCAAs) which are very helpful, especially on a longer term expedition.
Then make a pot of tea. Share with your partner.
Then make a pot of hot water: Make 2 freeze-dried dinners. (I like the spaghetti best generally.) And put them in the drop in pockets inside your parka to keep them warm. They HAVE to stay as warm as possible. They also take easily double the amount of time to rehydrate as the directions will tell you.
then make a pot of soup. Share with your partner.
Then make a pot of tea. Share with your partner while you eat your food.
Then fill bottles and maybe make another brew.
Break out a good chocolate bar for desert. Share with your partner.
If you’re going super light, like you have to on big alpine routes, especially at high altitude, then forget hot water. Drink plan warm water. You don’t have enough fuel or enough time to bring a pot to a boil.
Hope that helsp.