Tart Blackberry Soda Syrup

  • Serves

    makes About 6 Cups

By SAVEUR Editors

Published on January 17, 2008

This summer berry beverage is worth the trouble.


  • 8 cups fresh blackberries
  • 7 cups sugar
  • 2 cups filtered water
  • 2 tbsp. plus 2 tsp. tartaric acid
  • Seltzer


Step 1

Put blackberries, sugar, filtered water, and tartaric acid into a nonmetallic jar. Stir gently with a wooden spoon to combine and cover tightly. Let stand for 24 hours, stirring occasionally, to allow sugar to dissolve.

Step 2

Strain mixture through cheesecloth without pressing on berries (discard berries). Divide blackberry liquid between sterilized bottles or jars, cover tops with clean cheesecloth, and secure with kitchen twine or a rubber band. Store in a cool, dark place for 3 weeks, until acid is thick and syrupy and slightly fizzy.

Step 3

To serve, add 2 to 3 parts seltzer or water to 1 part acid and serve over ice.

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