The number on the front of the pot represents the mg per kg of MGO (Methylglyoxal) and the related strength of Antimicrobial Activity, which is known to kill certain types of bacteria. The greater the number, the stronger the Antimicrobial Activity. MGO in Mānuka honey is naturally made in the hive from DHA which is present in the nectar of the Manuka Bush. Within the hive DHA undergoes the Maillard reaction to naturally form MGO. 100% Genuine New Zealand Mānuka Honey. Independently tested to show it meets the New Zealand Government's definition of Mānuka honey. Pure New Zealand Mānuka Honey has a unique taste that changes as the MGO rating increases. Honey should not be given to infants under 12 months old. Please note that Manuka Doctor Honey is not for resale. Manuka Doctor honey pots are BPA free. If your honey does become runny then simply chill for a few hours.