Nanna's secret formula hamburgers cooked using 80ml ethanol for 4 hamburgers (14min cook time) on a brass body, copper-coil alcohol stove.
11degC air temperature, with a light breeze. Coil 2cm in diameter with 3/8" pipe. 6cm generator height. .8mm jet. Fiberglass wicks are present from the base of the fuel tank to the 2nd set of air intakes on the priming shield.
The pot stand doubles as a flame distributor when you place a pot on it. the flame pattern then becomes a "+" formation.