50 ml of Gin
100 ml of Tonic water
15 ml of blue curacao liqueur
35 ml of Lemon Juice
Into a Big Tumbler Glass put 5 - 6 ice cubes and a few thin slices of lemon. Pour the lemon juice squeezed from a half of a lemon (~30ml), the gin and the tonic water over the ice in the glass. Mix everything for a few seconds. Bring the glass to the person who will drink it and pour the Blue Curacao liqueur into the glass... for effect \r
Enjoy!