It is a type of Bourbon whiskey,Diet Cola . It is related to coca-cola pepsi . Johnny Drum (Green label) is manufactured by Britvic . It was introduced in 1980 . The main ingredients are  sugar . The name of the website is http://fullers.co.uk/rte.asp?id=58 . Variants of this food are Private Stock labels,Green,Black 12 . Alcohol is 20.5% by volume in it . US is the country of origin
It comes in 3 flavours