There a many varieties of mastic trees growing throughout the Mediterranean, it is on the Greek island of Chios that the production of gum mastic is centred with its Pistacia lentiscus chia variety. Chios became famous for its masticha, which derives from the Greek mastichon and is the root of the English word masticate, all meaning "to chew". You've likely already figured out that mastic was the original chewing gum and mouth freshener. As a hardened gum, the flavour is initially bitter, but after a few minutes of chewing takes on its gummy consistency and releases a mouth freshening flavour which remains for about 15 to 20 minutes.
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