BBC News: Cheddar matures 300ft down mine.
Big Pit, Wales' working mine museum, is lending its mine shafts to a firm creating a Welsh cheddar cheese. A Blaenavon company which makes four types of cheddar says the temperature 90m (300ft) underground is ideal for its 40kg (90lb) blocks of cheese. The cheddar is kept in purpose-made boxes for two weeks while it takes on a distinctive "marbling" on its surface. Cheddar cheese was traditionally matured in Somerset's Cheddar caves, from where it takes its name. Big Pit cheddar was the idea of Susan Fiander-Woodhouse, who runs the Blaenavon Cheddar Company with husband Gerry Woodhouse.