"Blue cheese is believed to have been discovered by accident, when cheeses were stored in naturally temperature and moisture controlled caves, which happened to be favourable environments for many varieties of harmless mold. Roquefort is mentioned in texts as far back as 79 AD. Gorgonzola is one of the oldest known blue cheeses, having been created around 879 AD, though it is said that it did not actually contain blue veins until around the 11th century. Stilton is a relatively new addition becoming popular sometime in the early 18th century. Many varieties of blue cheese that originated subsequently such as Danablu and Cambozola were an attempt to fill the demand for Roquefort-style cheeses that were prohibitive due to either cost or politics."