like the mold that goes into making cheese, soy sauce, and even life-saving antibiotics, like penicillin. Eating a little bit on your bread can't be that bad, right? Ultimately, it's a gamble.

Take Penicillium, for example—it’s the mold responsible for producing penicillin ... vegetables and vegetation. Old bread, spoiling apples and pears, and rotting plant bulbs are all perfect ...

Benji Jones: You could say there are two types of mold: the good and the bad. Penicillium notatum, for example, gave rise to the drug penicillin ... into your stale bread or rotten tomato and ...

He published a report on penicillin and its potential uses in the British Journal of Experimental Pathology. Fleming worked with the mold for some time, but refining and growing it was a difficult ...