I recently (5 weeks ago), purchased a set of dry salami from a food festival. I kept them in the plastic bag that they came in; however, when I recently checked them, they were completely covered with furry-looking green mould.
My understanding of dry salami is that it is supposed to be able to be kept for (in some cases) several years without risk. So I am confused, What could have caused the mould growth that I experienced?