Our unique 100% Australian Manuka Honey is not only bioactive and potent, it's delicious too. The methylglyoxal (MGO) bioactivity level of this particular jar of Manuka is shown below. Bioactivity (MGO) level: MGO (methylglyoxal) 220 - Strength 3 MGO Independently Tested* *MGO independently tested at NATA accredited laboratories MGO 220 means MGO 220+ mg/kg (at bottling) Medium strength, Contains natural enzymes, GM free Berringa Honey is entirely natural. It is unadulterated honey from nature and as such it will react to temperature and storage variations.  Crystallisation in Berringa Honey is not uncommon and it can easily be remedied by heating the honey (and the jar it is in) slowly in a bowl of hot water – or leaving it in a hot room/place.  Do not microwave it though as that will simply see it re-crystallise quickly after. Crystallisation is natural, safe and not a sign of mould spores or anything else untoward.