MGO 400+ 500g Manuka Honey has a naturally occurring minimum of 400mg/kg methylglyoxal content which is responsible for the remarkable properties in Manuka Honey. Manuka Honey is collected from a plant that is unique to New Zealand 嚙瘠 Leptospermum scoparium. The white flowers appear in spring and are much loved by the honey bees. Manuka flowers have a strong, aromatic fragrance and are full of the nectar which provides this dark, creamy honey. Methylglyoxal - the unique compound in Manuka Honey MGO Manuka Honey is labelled based on the minimum Methylglyoxal content (mg/kg) it contains. Methylglyoxal is the compound directly responsible for the remarkable properties of Manuka honey and the MGO rating clearly indicates the minimum level of this compound in each jar. No other system of measurement gives such a clear and simple indication. The higher the MGO rating the more Methylglyoxal content. Quality Assurance All of our MGOTM Manuka Honey products are scientifically tested and verified to ensure you are getting consistent quality. Every batch is subjected to laboratory tests that measure various quality parameters including Dietary Methylglyoxal content. Great care is taken to ensure that the Methylglyoxal is maintained from the bee-hive to the finished product so you do not lose any of the valuable properties of this remarkable honey.