Juniper-flavoured spirit drinks. This includes the earliest class of gin, which is produced by pot distilling a fermented grain mash to moderate strength (e.g. 68% ABV), and then redistilling it with botanicals to extract the aromatic compounds. It must be bottled at a minimum of 30% ABV.uniper-flavoured spirit drinks. This includes the earliest class of gin, which is produced by pot distilling a fermented grain mash to moderate strength (e.g. 68% ABV), and then redistilling it with botanicals to extract the aromatic compounds. It must be bottled at a minimum of 30% ABV.