I've got two different style Esbit stoves. It really isn't so much the stove, but rather the fuel. As Sarge has shown, you can use a tuna can for your stove. I've never used mine at high altitude, nor have I cooked a meal on them. I have used them to boil water for a hot drink or to re-hydrate a dehydrated meal. I really like the the Esbit fuel. The other fuel that I've used is Trioxane - I don't care for it as much. In the picture, you can see the two stoves and their fuels. The largers stove on the left is sold by Esbit. The one on the right came with the Trioxane tablets. The stoves can easily be modified with aluminum foil to help shield against the wind if need be.
http://i261.photobucket.com/albums/i...upplies006.jpg

