Harvest time.
If we harvest before Christmas we can be sure there will not be poisonous Tutin in our honey. This stuff can be eaten straight from the comb.
Passion vine hoppers suck the sap from the Tutin bush and then in turn bees harvest honeydew from the hoppers. This is especially true during hot summers so after Christmas all honey harvested needs to be tested.
As bees categorize nectar as they store it in their hives then Tutin honeydew can be concentrated in small areas of the comb. After Christmas comb honey is a no go.