blue mold of Roquefort type that's prime from November to May.
Sometimes when the skin of a rotten apple has been broken you will find in the broken place a blue mold.
Bread also sometimes has this blue mold; at other times bread has a black mold, and yet again a pink or a yellow mold.
Moisten a piece of bread, then dip a match or a pin into the blue mold on a lemon, and draw the match across the moist bread.
blue mold type from Dorsetshire; crumbly, sharp; made in flat forms.