Spiced Tonic Water

Ingredients

• Carbonated water
• For the tonic water::
• Zest and juice from 5 ½ limes
• 3 ¾ teaspoons citric acid
• 2 tablespoons cardamom pods
• ¼ cup Sichuan peppercorns
• ¹/₃ cup juniper berries
• + 6 more ingredients
• • ¼ cup dried orange peel
  • 2 ½ cups distilled water
  • 2 cups agave nectar
  • 4 ½ teaspoons 100-proof vodka
  • 2 ¼ teaspoons cinchona bark powder, also known as quinine bark powder
  • For the syrup::

For the syrup: Combine cinchona bark powder and vodka in a container with a tightfitting lid; cover and let sit overnight. Combine cinchona-vodka mixture and remaining ingredients in a medium saucepan, cover, and bring to a simmer (be careful—the vodka is flammable). Simmer, covered, for 30...

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