John I think you meant it's one strong mold, not bacteria. Making blue is not hard take a small piece of cheese like john did and put it on a wet bamboo mat and put in a cool dark place, in a few weeks you'll have more BLUE mold than the package you bought. I left my little cheddar, you know the one that has 10 different molds on it, in a frig in the garage that was off for weeks. Now this was before I even had blue mold from the store in the house. When I picked up the cheddar the entrire bamboo was covered in dry mold spores and they were definatley blue.
