I kept seeing references to how great the Jack Rudy Cocktail Co.'s tonic syrup is, and was saddened by the fact that it's not distributed in Louisiana - but a dear friend in Charleston sent me a bottle for my birthday. Turns out it's just as good as advertised, if not better. By far the best tonic I've ever had.
2 oz gin (my preference here is Death's Door)
0.75 oz Jack Rudy tonic
3-4 oz soda water
Pour gin and tonic in glass, stir, add ice, soda water. Garnish if you're feeling fancy.