A Gin & Tonic made with a potent base—45% ABV and above, if you mean business—and configured with two parts tonic to one part gin is a highball of balance and beauty. Too much gin, and the botanical spirit will overshadow the unique qualities of the tonic. Too much tonic, and it will drown the gin.
2 ounces gin
4 ounces tonic water
Garnish: 2 lime wheels
Fill a highball glass with ice, then add the gin.
Top with the tonic water and gently stir.
Garnish with lime wheels.