Our Bronx Cocktail explorations leave us with quite a lot of surplus gin to work through. Unlike whiskey, or even vermouth, I'm not up for drinking the stuff straight. Mixers are essential. While tonic water is the standard and perfectly acceptable, something different once in a while is also nice. Plus, in the further interest of pantry clearing, we do have some bitter lemon soda sitting around.
The combination is quite nice. In fact, I might go so far is to say it's better than gin and tonic. I guess I prefer lemon to quinine.