Black Black is a Japanese chewing gum famous due to one of its ingredients, caffeine! These sticks of gum, mentioned in ‘Wired’ magazine are charcoal grey in colour and have an amazingly strong mint flavour. In Japan, due to their caffeine ‘power’, notorious hard men advertise them! They contain sugar, oolong tea extract, ginko entract, chrysanthemum flower extract, grape extract, vitamin B-3 and that all important caffeine! As their English label says, ‘HI-TECHNICAL EXCELLENT TASTE AND FLAVOR’!