One way of getting around the Revenue's 'bottle and 200' regs when flying back from Menorca was to obtain a litre of 'gin doble' from the Beltran distillery in Mahon harbour. This was like rocket fuel and around 80% ABV, rather than the normal 38-40%, but would be supplied in the normal bottle. You had to speak nicely to Miguel Beltran's chaps, but they would usually oblige...
When safely home, the gin was diluted with a litre of distilled water - otherwise it wouldn't mix properly with tonic.
Happy days!