Among problems which accompany fans of campaigns of fishing and picnics there is an instant problem of food or heating with use of the minimum quantity of fuel.
In the treeless district or in the winter on ice you will not make fire. So, we take a can in the form "higher, than wide". I.e. similar to a tall glass.
To make it "brazier", we punch several openings for air access.
Only not from sides, and in day, and on the center of a bottom, but not on all area. It is necessary to make so that openings in day matched the channel for air in future "Indian candle".
We push in bank small чурочек (and churochka it is possible to call them with great reserve, in a finger thickness and 10 cm long), then we take out central.
The channel for air as in a classical Indian candle is formed. Sui there is a little birch bark, we set fire … In a few minutes "the oven – a candle" burns with an equal flame and burns minutes so 20-25.
The flame is rather stable on intensity, practically without smoke, low and equal. And time and capacity was more than enough to warm to bank of canned food and to boil a boiled water mug.
"Candles" good access of air from below and a smoke exit from above is necessary. Therefore the device needs to be raised over the earth, having delivered, for example, edges on 2-3 stones or on thick boughs. Also if necessary to warm water in a kettle, between it and candles it is necessary to lay several stones or sticks for a free exit of a smoke and ensuring good draft.