Esbit Solid Fuel Cubes
 
  .: Stable, non-explosive, non-toxic fuel
  .: Burns well at altitude
  .: No cartridges to carry or dispose of
  .: Depending on conditions, one large cube (0.5 oz) will bring one pint of water to boil in approximately 8 minutes
  .: Ignites easily with matches or lighter
  .: Does not spark or smoke
  .: Burns at 1,300 degrees F
  .: Makes a great fire starter