Esbit Solid Fuel Tablets

Esbit's hexamine solid fuel tablets are a fixture of ultralight and emergency cook setups: each 14 g tablet burns for around 12 minutes and brings 500 ml of water to a boil in roughly 8 minutes, with a caloric value of 28.4 kJ/g. The 12-pack totals 172 g, giving a predictable, stackable fuel supply that's easy to ration by simply counting tablets rather than estimating remaining gas in a canister. Solid fuel's main advantages over canister or liquid stoves are reliability in the cold and at altitude — hexamine ignites and burns steadily where pressurized gas can struggle — and near-total combustion that leaves little smoke or residue behind. The trade-off is a slower, less controllable burn than a gas stove with a valve, and tablets are compatible mainly with dedicated solid-fuel stoves or tripods rather than gas-canister burners. These suit hikers running a minimalist alcohol or solid-fuel cook system, and they double as a dependable emergency fire-starting or backup fuel source thanks to their long shelf life and simple ignition.