The mold on blue is from an equivalent family of spores wont to make Penicillin. With most foods, spotting gray veins with specks of blue mold amid a fast whiff of ammonia means it is time to throw whatever it once was within the trash. Yes, many sorts of blue make with a mold. Blue molds highlight a very unique taste, but there’s one question about it that a lot of people are thinking about: “can bleu go bad”? The mold of the surface make by edible mold (Penicillium) culture, so it’s safe to eat. But if other bacteria are going to be ready to develop within the cheese, it’ll go bad, and therefore the only thing you’d be ready to do is to discard it.