The process of converting an oil drum into a sweet potato roasting stove is as follows:

1. Find an oil drum and open the top cover.

2. Buy a furnace wall and place it in an oil drum as shown.

3. Then pile the mud next to it (note: if the mud with straw must be piled to the same height as the stove arm), you can roast the sweet potatoes.

Extended information:

The fuel used to roast sweet potatoes is anthracite (or charcoal), and there is a "coal core" that is not completely burned. Coal cores are extracted from furnace ash. Roasting sweet potatoes with coal cores is not only low-cost, but also has no soot smell and the heat is suitable.

The technical requirements for roasting sweet potatoes are not high, but the fire should not be too large. The temperature of the lower layer should be controlled between 200°C and 250°C, and the potatoes should be turned over frequently (every few minutes) and baked for more than half an hour (the time will vary depending on the size of the sweet potato). When there is sugar juice (also called oil) on the surface of the roasted sweet potato, pinch the skin with your hands. If it feels very soft and cooked, take it out and eat it.