Advertisement

Two Approaches: Syrup Method vs. Direct Method

Syrup method (recommended): Make a lemon simple syrup, then combine with plain sparkling water at serve time. More control over carbonation level. Better for batches and entertaining.
Direct method: Mix fresh lemon juice and sugar directly into a bottle and carbonate. Simpler, but carbonating juice can be tricky (more foam, less predictable).

Syrup Method — Ingredients (makes ~500ml syrup / 4–5 servings)

  • 200ml (¾ cup + 2 tbsp) fresh lemon juice (about 6–7 lemons)
  • Zest of 4 lemons
  • 300g (1½ cups) white sugar
  • 200ml (¾ cup) water
  • ½ tsp citric acid (amplifies lemon brightness)
  • Pinch of sea salt
  1. Combine lemon zest, sugar, and water. Simmer gently 3 minutes until sugar fully dissolves. Remove from heat.
  2. Cool to room temperature, then add lemon juice, citric acid, and salt. Stir well.
  3. Strain through fine mesh. Bottle and refrigerate. Keeps 2–3 weeks.

Serving

Fill a glass with ice. Add 60–80ml lemon syrup. Pour 200–250ml cold sparkling water gently over it. Stir once. Adjust ratio to preference — this is intentionally tart and bright. Add more syrup for sweeter, more water for lighter.

For a 1-liter pitcher: combine 200ml syrup with 800ml cold sparkling water. Serve immediately over ice — carbonation dissipates in a pitcher within 10–15 minutes.

Variations

  • Strawberry Lemonade: Add 100g macerated fresh strawberries to the syrup during the cool-down steep, then strain
  • Mint Lemonade: Add 20g fresh mint leaves to steep for 10 minutes off heat, then strain
  • Meyer Lemon: Substitute Meyer lemons for a sweeter, more floral character — reduce citric acid by half
  • Honey Lemonade: Replace sugar with equal weight of honey for a more complex sweetness

FAQ

Can I carbonate lemonade directly in a SodaStream?
SodaStream machines are designed for plain water only. Carbonating lemonade directly can cause excessive foaming and may void the machine warranty. Use the syrup method instead: carbonate plain cold water, then combine with lemon syrup in the glass.
How much lemon juice per liter of sparkling lemonade?
For a well-balanced sparkling lemonade, target approximately 40–50ml of fresh lemon juice per 250ml serving (one glass). In syrup form at 1:5 dilution, that means about 80–90ml of fresh juice per 500ml of finished syrup.
🧮 Scale This Recipe
Use the Syrup Calculator for any batch size.
Disclaimer: For informational purposes only.