Honey Thumb Test: Put a dab of honey on your thumb and see how it reacts. Honey that doesn't keep its form and doesn't spread or leak too much might be adulterated.
To do the water test, fill a glass with water and put in a single drop of honey. Instead of dissolving quickly like fake honey, real honey will sink to the bottom of the glass.
Flammability Test: Honey in its purest form can be ignited. To test the honey's purity, just hold a lighted match over it. The increased moisture from polluted honey will cause the match to burn out quickly.