2 Old Tom Gin, 1 Lemon juice, ice, top with about 2 oz soda. If you don’t have Old Tom Gin, use Dry Gin but add 0.25 simple syrup. [The closest living relative of the “gin sour.” Probably the most refreshing drink. It’s a very crisp, bubbly lemonade. The Old Tom really makes this come alive, but Dry Gin will also make a tasty drink.]