The word COB originates from an old English term meaning “piece” or “loaf.”
Cob is a mixture of clay, sand and straw. Depending on the object, up to 20 cm long straw can be added to the mixture during the work process. As a rule, the mixture is mixed on top of the load cover by stomping with feet or in a special mixing machine.
Cob mix is a strong building material, and houses built from it can last for millennia. The oldest known house built in the Cob style is 10,000 years old.