Volcano stoves arent new. But in my experience they are hard work - especially if your expecting your main fuel to be twigs! Primarily due to the fact that most stove designs are to small to allow a good hot burn - when after all in a emergency you could just as easily make a fire!
So what makes the Swiss army stove so special?? Well its not just a stove ...... the stove contains no only the stove itself but a 500ml cup and a 1 litre bottle or flask thus making the emergency stove a complete kit! Word of note here some folks replace the flask with a sigg bottle - I have tried both and both work equally well to be honest but the cork stopper is handy as a lid for the flask if using it to boil water!
And thats the trick as I find generally its better to boil the flask than to use the cup - one, its better if theres two people! Two, if your boiling water to purify it the larger the amount done in one go the better and three it avoids a sotty tarry mess on the cups bottom which will mess up the inside of your pack!
So if the stove any good? Its not a jet boil for sure but for the pennies its one hell of a back up stove - and if its any recommendation at all its the stove that now lives perminently in my daysack and emergency pack .............