For those of us who have had a bad gin and tonic, there’s plenty to fear in the unknown. G&Ts are a bit of an unknown quantity when it comes to bars—the unknown quantity specifically being how much gin is or isn’t in the drink.
A bad gin and tonic can go wrong from erroneous proportions, but everything from bad tonic to bad garnishes can make a bad drink worse, even when it comes to something so simple as a two ingredient drink.