Most honey isn't honey:

http://www.foodsafetynews.com/2011/11/tests-show-most-store-honey-isnt-honey/

Seems our modern obsession with clean pure foodstuffs has once again bit us in the backside. In this case, it's "ultra-filtering" of honey to remove those cursed unnatural pollen particles. This allows sugar water to masquerade as honey.

Of course, this example isn't very paleo, being so glycemic. Does anyone have examples that are more paleo?

Please confine your answers to those cases which are motivated by hygienic muddle-headedness, like this one.