Tonic Water Recipe for Sodastream

As a gift I received the ingredients and recipe for tonic water for my Sodastream. (or direct SodaStream)
-Cinchona Bark (3/4c )
-Citric Acid (1/4c)
-allspice (about 10 berries)
 -sprinkle of salt
-water (1qt)
-agave syrup (1c)
-dried lemon grass (one packet)
-limes (3)
-lemon
-orange

Zest and juice all of the fruit then mix all of the above ingredients (except agave) in a pot and boil then simmer for 30min.
  After boiling strain with a larger strainer then after a coffee filter.

After filtering add one cup of agave syrup and heat to dissolve. Once cool mix 1:3 with gin and add ice, lime wedge and sodawater. The tonic is not very sweet so additional agave syrup to taste

This recipe is modified from the internet, another in this book. Homemade Soda: 200 Recipes for Making & Using Fruit Sodas & Fizzy Juices, Sparkling Waters, Root Beers & Cola Brews, Herbal & Healing Waters, ... & Floats, & Other Carbonated Concoctions