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Bottle with rhubarb cordial & glasses.
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4.93 from 14 votes

Homemade Rhubarb Cordial (Rhubarb Syrup)

Homemade Rhubarb Cordial (Rhubarb Syrup) transforms sharp rhubarb into sweet & most refreshing drink. Simply dilute with either still or sparkling water to make beautifully thirst quenching beverage. Great in cocktails too!
Course Beverages, Cocktails, Drinks
Cuisine American, British, International
Keyword rhubarb cordial, rhubarb syrup
Prep Time 10 minutes
Cook Time 15 minutes
Total Time 25 minutes
Servings 14 200ml servings (diluted)
Calories 79kcal
Author Jo Allison


  • 500 g rhubarb cleaned and cut into chunks
  • 1 thumb size piece of ginger peeled and finely grated (optional)
  • 1 lemon (zest & juice) preferrably unwaxed and organic (see notes)
  • 250 g caster (fine) or granulated sugar
  • 400 ml water


  • Put rhubarb, sugar, grated ginger (if using), lemon zest, juice and water into large pan or stockpot and give them a mix.
  • Put the pan on a medium heat and bring to boil. Let it simmer for 10-15 minutes until rhubarb turns soft and mushy and sugar dissolves.
  • Take the pan of the heat and prepare the bowl or large measuring jug you can easily fit the sieve on. Strain the cordial (syrup) through the sieve. I usually help to speed up the process with the spoon but if you are after a really clear syrup you might want to leave it be for a few hours as the syrup drips slowly into a bowl. Whichever way you choose, it does not affect the flavour!
  • Pour the cordial (syrup) into prepared sterilised bottles (see above for details) and chill in the fridge.
  • Dilute 50ml cordial (syrup) to 150ml water.
  • Enjoy with some ice!


  • Nutritional values are approximate, per serving (50ml of undiluted cordial) and should be treated as guideline only.
  • Feel free to replace lemon with orange or even use both. 
  • Rhubarb cordial will keep in the fridge for up to 2 weeks. For longer shelf-life add citric acid (read above). 


Calories: 79kcal | Carbohydrates: 20g | Protein: 1g | Fat: 1g | Saturated Fat: 1g | Sodium: 3mg | Potassium: 114mg | Fiber: 1g | Sugar: 18g | Vitamin A: 35IU | Vitamin C: 6.9mg | Calcium: 34mg | Iron: 0.1mg