The idea is to use a small intense fire to grill the burger, I use a charcoal starterand place a grating on top. You could make one from a large can or a peice of smoke pipe etc. with perferations for venting. The charcoal starter has a grate in it to separate the charcoal , on top,from scrunched up newspapers in the bottom for starting the coals, though you could probably get away with just stacking the charcoal on top of the newspaper in a metal cylinde ror can with vent holes. Light up the newspapers to get the charcaols started. How much hell you want to give your burger and how many you'll be cooking is the amount of charcoal you'll need, at least close to 1/3 or more full. if you have access to a compressor/air hose you can speed start the coals with some air.