Why pasteurize honey?
Honey contains yeasts. These yeasts are very different from the yeasts used in bread, vinegar and alcoholic beverages. They will cause fermentation in honey with a moisture content over 18% to 19%. These yeasts can be killed by heating honey to 160ºF for a short duration of time. The heating of honey to high temperatures will also cause a delay or slowing of granulation by the dissolving of small sugar crystals present in raw honey. These crystals can initiate the granulation process. The heating of honey also thins it so it can be finely filtered.