I have a couple of Trangia stoves but in the field I've always preferred the flat solid-fuel Esbit-style stoves instead. One reason is a fear of spilling burning liquid fuel. Another is that although the Trangia by itself is small, it seems to need more paraphenalia in the form of stands and windshields. The bought solutions are big, and my home-made ones are a bit too clunky to be a pleasure to use.

Two advantages of the liquid fuel are that you can ignite it with a spark (when it's warm) without needing an intermediate tinder; and the Trangia has a simmer cap and a bigger fuel store so it is probably a more realistic tool for "proper" cooking.

I'm not sure either counts as a long-term solution unless you can stockpile a huge amount of fuel, or can make it yourself somehow.