The diagram illustrates the design and function of a home smokery used for cooking and flavoring food. The process consists of three main underground stages that lead to a smoking box at ground level.
Overall, the process begins with the intake of fresh air and ends with the smoke reaching the food in a closed container.
To begin, fresh air enters through the first section, which is a hole in the ground covered by a lid. This air travels through a narrow pipe into the second section. In this middle area, a fire is lit under a stack of logs. The air helps the wood burn, which produces a large amount of smoke. This part is also protected by a lid to control the heat.
Next, the smoke moves through another pipe into the third section. It passes through a layer of bricks before rising into a large box located at ground level. Inside this box, pieces of fish and meat are hanging. Finally, the smoke fills the box to cook the food.