ELI5: Explain Like I'm 5

Wood briquette

Wood briquettes are special pieces of wood that have been turned into small blocks. Wood is cut into small pieces, usually in the shape of a cube, and then pressed together using special machines. This squeezing process causes the wood to stick together and become hard, like a block of wood. Wood briquettes are used as a fuel in the same way we use coal or other fuels. Burning wood briquettes produces heat and light, which is why they are used to cook food or provide heat in homes.
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