Rhubarb simple syrup is a gorgeous and simple way to elevate a cocktail or mocktail. Tart and sweet, make it in the spring, or year round with frozen rhubarb!

This post was first published May 31, 2018 and was last updated May 27, 2020.

I don’t have extra freezer space to store rhubarb year round, so I load up like mad as soon as I see the stalks first appear at the market.

Gorgeous, rustic gluten-free rhubarb crisp, creamy and light rhubarb curd, and small-batch maple rhubarb jam with cardamom are just a few of the recipes I look forward to each spring. Rhubarb simple syrup is another great way to celebrate rhubarb’s arrival!

Ingredients You Need To Make Rhubarb Simple Syrup:

• fresh or frozen rhubarb
• sugar
• water

What Is Simple Syrup?

Simple syrup is a mixture made by heating equal parts sugar and water until the sugar dissolves. It’s a great way to add sweetness to drinks without the grit of undissolved sugar.

Simple syrups can be flavoured with many different ingredients including citrus peels, dried hibiscus flowers, or rhubarb!

Should Simple Syrup Be Refrigerated?

Yes, absolutely you should refrigerate simple syrup, especially when flavouring it with ingredients like rhubarb. Keeping the syrup in the fridge will slow down the growth of bacteria. We generally use up our rhubarb syrup within two weeks. Keeping it longer than that will eventually lead to mould growth.

Keeping rhubarb syrup in the fridge also means it’s chilled and ready to go for your favourite cocktails and mocktails!

Can You Freeze Simple Syrup?

Freezing rhubarb simple syrup is a great way to extend its life past the spring, however, because of its high sugar content, it may not freeze solid.

You could freeze simple syrup in a glass jar, however, I’ve had jars crack in the freezer upon expansion as the liquid freezes. Instead, try freezing rhubarb syrup in a plastic squeeze bottle with the top covered, or a plastic container with a tight-fitting lid.

12 Uses For Rhubarb Simple Syrup:

1. Add an ounce or two to your favourite cocktails.
2. Pour an ounce or two over ice and top with soda or lemonade for a refreshing mocktail.
3. Make rhubarb-sweetened iced tea.
4. Swirl it into yogurt for breakfast.
5. Pour it over pancakes or waffles.
6. Try a splash in a glass of Prosecco.
7. Brush it on top of cake layers as a cake soak.
8. Mix with fresh strawberries for strawberry shortcake.
9. Peel and slice pears, and poach in rhubarb syrup. Spoon over poundcake, or meringues.
10. Add a splash to a smoothie.
11. Mix together with fresh fruit for a spring-inspired fruit salad.
12. Stir into oatmeal and top with fresh berries.

More Rhubarb Recipes You Might Enjoy!

Did you make this recipe? If yes, I would love to hear from you in the comments below! You can also find me on Instagram @kellyneildotcom, or on Facebook, Twitter, and Pinterest.