Applied to cheese which has become the bed of a fungus,
technically called Aspergillus glaucus. The blue mould of bread,
paste, jams, etc., is the fungus called Mucor Mucedo.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
More on Blue Mould from Fact Monster:
- FUNGI - Fungi grow without sunlight and feed on organic matter. A typical fungus is made of many threads growing on or in a food source. Each thread, called a