Rhubarb Fizz Cocktail – Sugar Free!

This rhubarb cocktail is a delightfully refreshing spring beverage. With a beautiful pink color and that unique rhubarb flavor, it’s the perfect sugar-free cocktail for Mother’s Day!

I’ve made no secret about my love of all things rhubarb, and how much I love to work it into keto dessert recipes. And now I offer you this sparkling sugar free cocktail as yet another wonderful way to enjoy that stalky low carb vegetable.

Rhubarb is only available in the spring, so for me it just screams Mother’s Day. Since it isn’t something you can find year round, it lends a festive touch to any recipe. And what’s more festive than a sparkly, sweet pink cocktail?

I’m calling it a rhubarb fizz, but it could honestly be considered a rhubarb mimosa too. It’s perfect for Sunday brunch or as a tasty pre-dinner cocktail.

Sugar Free Simple Syrup

Simple syrup is a common ingredient in many cocktails. And for years, I despaired of having a good keto-friendly version. Because if you understand the properties various keto sweeteners, then you know that erythritol does not make very good simple syrup.

But new sweeteners like allulose have come along and changed the game entirely. Allulose is what they call a “rare sugar”. It actually IS, in fact, a sugar, but it does not affect blood glucose at all – and may even lower it. So in that regard, it does not behave like regular table sugar.

However, it does behave like sugar when simmered with water, so you can make syrup with it. I have a delicious and easy keto chocolate syrup that uses allulose.

I decided to make a rhubarb simple syrup for this sugar-free cocktail, so I simply simmered rhubarb with water and a combination of Swerve and allulose. You could simply use allulose for this if you prefer.

How to make a Rhubarb Fizz Cocktail

This fun sugar free cocktail was inspired by one I spotted on Saveur.com. It’s super easy to make and the rhubarb syrup is useful for other recipes too. Try it over ice cream!

Rhubarb Simple Syrup

You will need about 4 stalks of rhubarb for this recipe. Chop it into slices about 1/4 to 1/2 inch thick. They do not need to be even and perfect.

Simply bring the rhubarb, water, and sweeteners to a boil. Reduce the heat to a simmer and cook until the rhubarb is super soft. Then strain the mixture through a sieve to remove the solids.

If you’re a rhubarb lover, don’t throw those solids away! They are tasty and delicious in yogurt, over ice cream, or just eaten with a spoon.

Let the rhubarb syrup cool before adding it to a cocktail. Store it in the refrigerator in a glass bottle or jar. It makes about 6 ounces (enough for 6 cocktails) and should last up to two weeks.

Rhubarb Fizz Cocktail

Once you have the syrup, you can make these sugar free cocktails any time. You can make one or a bunch, as you please.

Add about 1 ounce (2 tablespoons) to the bottom of a champagne flute. Stir in 1/2 ounce (1 tablespoon) vodka or gin, and then top up with champagne or Prosecco.

Can you make a Virgin Rhubarb Cocktail?

Absolutely! I recommend using a bit more of the rhubarb syrup (1 1/2 to 2 ounces) and topping up with seltzer or soda water.

You may find you want to sweeten it a bit more, simply because soda adds no sweetness. Stir in a teaspoon or so of powdered Swerve into your mocktail to make up the difference.

More Keto Mother’s Day Brunch Ideas

• Bakery Style Keto Coffee Cake
• Asparagus Eggs Benedict
• Keto Bagels
• Keto Almond Croissants
• Low Carb Corned Beef Hash
• Keto Lemon Poppyseed Cake