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A bright, tangy, and refreshing homemade rhubarb soda made with rhubarb simple syrup and sparkling water. The syrup is versatile and can be used in cocktails, mocktails, or desserts.

Ingredients

Scale
  • 1 lb fresh rhubarb stalks, trimmed and chopped (discard leaves)
  • 1/2 cup sugar or preferred sugar substitute (adjust as needed)
  • 3 cups water
  • Sparkling water (for mixing with syrup)
  • Optional flavorings: split vanilla bean, star anise, cardamom pods, cinnamon stick, sliced fresh ginger

Instructions

  1. Trim and chop rhubarb stalks, discard leaves.
  2. Combine chopped rhubarb and sugar in a non-reactive pot.
  3. Add water and stir to combine.
  4. Optional: Add flavorings such as split vanilla bean, star anise, cardamom pods, cinnamon stick, or sliced ginger to the pot.
  5. Bring to a boil, then reduce heat and simmer gently for about 8 minutes until rhubarb is very soft.
  6. Allow the mixture to cool to room temperature (at least 15 minutes).
  7. Strain through a fine-mesh sieve, jelly bag, or cheesecloth, pressing gently to extract syrup.
  8. Optional: Boil strained syrup further to concentrate or thicken if desired.
  9. Refrigerate syrup until completely chilled.
  10. To serve, pour about 1/3 cup chilled rhubarb syrup into a glass, add 2/3 cup cold sparkling water, add ice, and mix gently just before drinking to maintain fizz.

Notes

Adjust sweetness by using more or less sugar or sugar substitute based on taste., Add lemon or lime juice to balance overly sweet syrup., Add fresh herbs like mint, basil, or rosemary as syrup cools for herbal flavor., Use syrup as a base for cocktails by adding spirits like gin, vodka, or rum., Concentrate syrup further to create a cordial for cocktails or dessert drizzle., Store syrup refrigerated in an airtight container for 10–14 days., Freeze syrup in ice cube trays or containers for up to 3 months; thaw before use., If sugar crystallizes in syrup, gently warm and re-chill., Use frozen rhubarb straight in pot without thawing first., Mix syrup with sparkling water only before serving to preserve carbonation.

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