How to recognize a real Absinthe?

Due to the resurging popularity of Absinthe, and the myth that surrounds it, many products calling themselves absinthe were produced, notably outside France. In fact, they were not absinth at all. Here are some pointers to recognize the real absinth.

-Absinth is a precursor of pastis. Its recipe contrasts the sweetness of anise with the bitterness of the absinth plant. High quality absinth was coloured naturally through plant maceration.
- Absinth worthy of its name becomes cloudy with the addition of water, turning an iridescent green colour (not fluorescent green, which is the result of artificial ingredients, resulting in the myth of the Green Fairy).