You may have noticed that many of the Kirikiriroa and Horsham Downs jars, of the current batches, have white marking around the inside of the jar, you may think it looks like mould. Don't worry, it's not! This is called frosting. It is due to the presence of air trapped between the side of the jar and the honey, and therefore crystals form against the glass. Frosting in honey usually starts as a small white streak or crescent on the edge of the jar and can gradually spread over time, sometimes it covers most or all of the inner surface of the jar.
You may be put off by the look of the honey but don't worry once you open it you will generally find it just up against the jar and it definitely does not affect its taste! The next batch should be all fine again.