Tonic Syrup

  • SERVINGS: About 12 ounces


  1. 1 cup water
  2. 1 cup sugar
  3. 1 lime half
  4. 2 fresh lemongrass stalks, coarsely chopped
  5. 1/2 teaspoon ground cinchona bark or quinine (see Note)
  6. 1 teaspoon citric acid powder or lemon salt (see Note)
  1. In a small saucepan, bring the water to a boil. Stir in the sugar, lime, lemongrass, cinchona bark and citric acid powder. Simmer over moderate heat for 15 minutes. Strain through a coffee filter into an airtight container and refrigerate for up to 3 weeks.
The bark of cinchona trees produces quinine and it gives homemade tonic water an alluring bitterness. You can buy quinine powder from Citric acid or lemon salt is a key ingredient in homemade grenadine, citric acid is a nonalcoholic preservative derived from citrus fruit that also adds tang. Available from