Honey Adulteration tests from India: A 100% Detection of C4 Sugars
While we are seeing rates of 20+ percent in some parts of the world. Tests in other areas can be even worse.
Honey Fraud is a Worldwide Problem!
South Africa has seen as much as 75% of the honey that has been tested as fraudulent and this was using the C4 test that doesn't detect rice syrup. Extensive testing is going to be the only way to stop this. It is far too easy to get starch syrups these days. And local doesn't necessarily mean safe any one can jump online and get it delivered. There often is some beekeeper that always has a great crop and never seems to run out of honey.
The honey mixed into other foods is one of the destinations for fake honey.
Jonathan Hache of the CFIA talks about how honey added to food products is one of the biggest problems with regard to syrup masquerading as honey. Read more here