All you need is a tin with a lid,cardboard and candle wax. Cut the cardboard to fit the tin to the height of the tin and length rolled up. Then heat some candle wax and fill the tin. Then light the stove to get the wax to settle and to char the top of the cardboard which makes it easy to light in the field. The lid is used to extiguish the flame when your finished cooking. How long the stove lasts depends on how big the tin is,ive cooked on mind and boiled water over a dozen times before refilling it but i think i could have used it a few more time before it needed a re-fill. Here im using it on a day hike to boil my water for a coffee.. Here i was using three tent pegs to support the billycan.