Rhubarb Simple Syrup: A Sweet (and Easy!) Taste of Summer

ByAmy
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rhubarb on cutting board and dark background

As rhubarb season hits its peak, there’s no better way to capture its sweet/tart magic than by making this simple homemade rhubarb simple syrup. As I’ve mentioned before, I love rhubarb. But I’ll admit, it took me an embarrassing amount of time to discover rhubarb simple syrup. If you’ve never made a fruit syrup before (like our lemon simple syrup or strawberry mint simple syrup), this is one of the easiest places to start—and it’s super versatile.

This rhubarb simple syrup recipe is perfect for drinks, lemonade, iced coffee, and even desserts. It’s bright, fresh, and adds that little “something special” to everyday recipes.

How to Make Rhubarb Simple Syrup

Ingredients for Rhubarb Simple Syrup

  • Rhubarb- 4–5 stalks, chopped into 1-inch pieces (about 4 cups)
  • Sugar- 1 cup
  • Water- 1 cup

Optional Flavor Enhancers: A few slices of ginger, a splash of vanilla extract, or a sprig of fresh mint

Step By Step Instructions

  1. Prepare the Rhubarb:
    Rinse the rhubarb stalks thoroughly and trim off any leaves (which are toxic and should not be consumed). Then chop the rhubarb into roughly 1-inch pieces.
  2. Cook the Syrup:
    In a saucepan, combine the chopped rhubarb, sugar, and water. Optional: Add flavor enhancers like ginger slices, vanilla extract, or mint for added complexity. I’m not a huge fan of these additions, but the friend who passed this recipe along truly loves a mint or vanilla addition to this syrup.
    Bring the mixture to a boil over medium-high heat, stirring occasionally.
  3. Simmer and Soften:
    Once boiling, reduce the heat to low and let the mixture simmer for about 20–25 minutes, or until the rhubarb is completely softened and the liquid has thickened slightly.
  4. Strain and Cool:
    Remove the saucepan from the heat and allow the syrup to cool for a few minutes. Strain the syrup through a fine-mesh sieve or cheesecloth into a clean container to remove the solids. Press gently on the solids to extract as much liquid as possible.
  5. Store:
    Transfer the rhubarb simple syrup into a clean bottle or jar. Store it in the refrigerator for up to 2 weeks.

How to Use Rhubarb Simple Syrup

One of the best things about homemade rhubarb syrup is just how many ways you can use it. Once you have a jar in your fridge, you’ll find yourself adding it to everything.

Refreshing Drinks

  • Stir into our fresh squeezed lemonade for a bright, tangy twist
  • Add to iced tea for a subtle fruity flavor
  • Mix into sparkling water for a quick homemade soda

Coffee & Lattes

  • Add to iced coffee for a lightly sweet, fruity note
  • Pair with vanilla or white chocolate for a coffee shop-style drink
  • Use in cold foam for a unique seasonal topping

Cocktails & Mocktails

  • Rhubarb mojitos with mint and lime
  • Rhubarb spritz with prosecco or sparkling water
  • Simple rhubarb lime mocktails

Desserts & Breakfast

  • Use as a light syrup for fruit salads
  • Drizzle over pancakes, waffles, or yogurt
  • Spoon over vanilla ice cream

Why Isn’t My Rhubarb Syrup Bright Pink?

One thing that surprises people is that rhubarb simple syrup doesn’t always turn out bright pink—and that’s totally normal.

The color depends on the type of rhubarb you’re using. Some varieties are deep red, while others are more green, which can result in a more golden or muted syrup.

If you want a more vibrant color for drinks, you can:

  • Add a few strawberries while simmering
  • Use redder stalks of rhubarb

The flavor stays the same either way, and that’s the best part.

Frequently Asked Questions

How long does rhubarb simple syrup last?
Stored in the fridge, it will last about 1–2 weeks in a sealed container.

Can you freeze rhubarb syrup?
Yes! Freeze in small portions (like these ice cube trays) for up to 2–3 months.

Can I use frozen rhubarb?
Absolutely. Just add it straight to the saucepan—no need to thaw first.

Can I make this less sweet?
You can slightly reduce the sugar, but keep in mind that sugar helps preserve the syrup.

A Sweet Way to Use Seasonal Rhubarb

Homemade rhubarb simple syrup is one of those small things that makes everyday drinks and recipes feel a little more special. Whether you’re adding it to lemonade, stirring it into iced coffee, or drizzling it over dessert, it’s an easy way to bring fresh seasonal flavor into your kitchen.

If you enjoyed making this homemade syrup, you might also love my full collection of coffee syrup recipes. Check it out here!

Bottle of rhubarb simple syrup on cutting board with rhubarb and glass of rhubarb beverage
Print Recipe

Simple Rhubarb Syrup

Prep Time5 minutes
Cook Time25 minutes
Course: Appetizer, Dessert, Drinks, Salad
Keyword: rhubarb, rhubarb syrup, simple syrup

Ingredients

  • 4 cups rhubarb, chopped
  • 1 cup water
  • 1 cup sugar

Instructions

  • Rinse rhubarb and chop into 1 inch pieces
  • Combine chopped rhubarb, water, and sugar in saucepan and bring to boil, stirring occasionally
  • Once boiling, reduce heat to low and allow to simmer for 25 minutes or until rhubarb is mush and liquid is slightly thick
  • Remove from heat and strain
  • Store in refrigerator

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