It's kind of funny that we are talking about this right now. I just did a test run with three stoves (designed very much alike) and heated two 16 oz.(of water) containers (identical containers)with two of the stoves and 32 oz.(same container) of water with the other. The two 16 oz.(of water) containers came to a boil much faster and with much less fuel than the one 32 oz.(of water) container, so with that being said I think that it would apply to 12 oz./24oz...at least in theory it would....sabre11004...