JP..check out nitro-pak.com..they have a heat "can" that burns for a small amount of time (6 hrs?) and puts out lots of BTUs. It's about $5 ea. I think it's called Alco-Lite or something like that - and the neat thing is - unlike other heat sources, you can BURN IT INDOORS! I bought a few of these, plus the "stove" to cook on.
Not very reassuring!
I did order the heat source
Compact, economical, and easy to use. Used for either cooking or heating--indoors or out. It's alcohol gel-based fuel is smokeless, odorless, clean burning and is also environmentally friendly (gives off harmless CO2 & water vapor). Produces 10,000 BTU's. Fry an egg in 4-5 minutes or boil a pint of water in approx. 8-10 minutes! Comes with one 16 oz. can of fuel, a stainless steel base and snap-on adjustable damper to regulate heat. Burns approx. 4 to 7 hours. Great for campfire or BBQ lighting. Indefinite shelf-life. List $19.95 ( on sale now)