OK, it has happened to me for the first time this weekend. I had left the sealed baby food jar of pectin glue in with my rolling tools for a few weeks. Found it covered with a happy and healthy growth of mold. Trashed it, cleaned out the jar, remixed a fresh batch and I am now storing it in the frige. Is there anything I can add to the mix to suppress mold? perhaps replace 50% of the water with vodka?