What is the strongest drink in the world? Assuming that it is available through 'normal' outlets - shops, supermarkets, off licenses etc... (in other words legal)  What (per unit) is the strongest alcoholic drink in the world?  Beers, wines and spirits included.
At the time of writing this the strongest beer in circulation is a scottish made larger/pilsner Snake Venom By Brewmeister, this beer is 67.5% ABV. and is strongly recommended that you only drink small amounts in a sitting, buying a bottle(275ml) of this would set you back a £54.99 

Other than this beer there was Koelschip Mistery Of Beer - Brouwerij het Koelschip that was 70% ABV but as I'm aware is no longer in circulation and has had production stopped as the brewery shut down 

As far as all alcohol goes the strongest spirit is spirytus rektyfikowany which is a 96% Vodka. The cheapest you will find this is a small bottle(10cl) and  this will cost £7.95 It is is strongly recommended to not drink this neat as it would be damaging