The infamous 'betel nut'. I had to try it, just once. Not sure if I like it or not... Need to try it again. For those not in the know, betel nut is a type of palm fruit that Taiwanese guys like to chew in a similar way to tobacco. It's usually wrapped in a leaf with of lime smeared on it. Chewing it is meant to give you a buzz. It's not a polite habit, becase when you chew it, your saliva goes a really disgusting red-brown colour and your teeth get stained an unsightly red hue. It also causes you to spit everywhere, especially in the street. Oh, well, when in Rome...