a good choice is the Pheylonian Life Lite..it's a beeswax
candle in a can..they have several sizes..mine is the middle
size one about as big as a can of beans..it has a heavy wick
and is said to burn 70 hours..it comes with two sturdy metal
bits that slip on to form a pot holder..they are made in Canada
and the company claims they have been tested by the Canadian
goverment in the arctic and will burn at 60 below..i was given
one of these 10 years ago by a buddy who worked in northern
Canada and he kept a couple in his truck..along with a sleeping
bag..i never used mine for anything but backyard testing but
if you want a cooking candle i would have a look at this..
the web site..www.philoxia.com/survivalcans is somewhat qurky
but enjoyable..