Honey labels here in the US are inconsistent and confusing to say the least. I've seen the terms, "raw", "unfiltered", unpasteurized, pasteurized, gently filtered, etc. Does New Zealand have a consistent term for different treatments of honey? I assume "raw" means the same thing as "unpasteurized" here, how about there?
It's a complex issue, and here in NZ, there is not that much consistency, but I think as with many other things when you compare NZ products to USA's is that USA products generally have more of both extremes: USA's best is often better than NZ's best products (not always) and USA's worst is often worse than NZ's worst (again, not always). The terms are confusing, but your "raw" "unfiltered" honey is the best you will be able to get. The "may contain pesticides" is an interesting one. I would think that 99% at least of American honey would DEFINITELY contain pesticides, the figure would be similar for honey here in NZ, simply because of the ubiquity of Varroa mites, and the fact that to kill them, beekeepers are pretty much bound to the chemical companies' chemical cocktails. Combine that with a disease called American Foulbrood (AFB), the problems get worse. In USA, beekeepers are allowed to use antibiotics to "treat" this bacterial infection. Here in NZ, if AFB (which is present) is found in any hive, you need to tell the authorities, and and you need to burn all infected hives and it's a good idea to burn some associated equipment (contaminated gloves, etc.). The antibiotics and varroacides will manifest themselves as pesticide residues in most honey, except for certified organic, but even there, bees will pick up agrichemicals sprayed on crops and bring them into the hive with pollen and nectar. Even honey from my own backyard hives contains varroacide residues.
"Raw" is unheated in any way.
"Unfiltered" is a difficult one, because all honey has been passed through screens to remove wax bits, dead bee parts, etc. Maybe there is a definition as to how fine the mesh is, but normally "filtered" honey will have had at least some of the pollen removed.
I'm not sure if "raw" and "unpasteurised" mean the same thing. By definition, raw has not been pasteurised, but not necessarily the reverse is true. Personally, I don't think honey needs pasteurisation because for the same reason as our yeast doesn't much like honey, neither do pathogens: honey has a SG that is too high, which sucks moisture out of microbes' cells. The pH is too low, and all honey contains H2O2 (hydrogen peroxide) which is a potent antimicrobial. The level of H2O2 increases with age.
Pasteurisation is the process of heating then rapidly cooling in a very strict manner. Non raw honey (normally liquid honey) has simply been heated to over 60˚C which stops crystal growth. I don't know why this happens, but once it has been heated past 60 it will remain liquid (i.e. not "raw"). I don't think the process is the same as pasteurisation. I could be wrong.
The bottom line is, if you're worried about quality, look for those terms "raw", "unfiltered", "unprocessed", "unpasteurised", etc. and avoid those which have been adulterated. they will often be liquid, the ingredients may not be 100% honey, and the finely filtered ones may not even contain pollen. I'm sure the yeasties can't tell the difference. Perhaps you can in your final product!
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