Recently I took a 5lb jar of honey that had crystallized and put it a pan of warm water to reliquify it. As is went back into liquid form I noticed quite a mass of frothyness forming. It foamed to such a point that the froth started to come over the top of the jar. I reached for a spoon with the intent of taking a few tastes...enough to get what was overflowing. It had an odd, but pleasant taste, and I wondered if this honey had fermented. Having never tasted fermented honey, I am not sure. I ended up eating "all" of the foam that come up, and the honey also tasted really good. So...I'm wondering if this honey had indeed fermented...or if something else happened. I have never had honey froth up like that when being reliquified. Any thoughts?