Vodka Sour with Blackberry Simple Syrup

Using blackberry simple syrup in a classic vodka sour creates a well-balanced cocktail with bright flavors of lemon and blackberry. Add an egg white, and you’ve got a smooth mouthfeel that makes the sipping of this blackberry sour even easier.

This vodka sour recipe using blackberry simple syrup was created for my 52 weeks of cocktails challenge (week 22: simple syrups). Simple syrups are easy to make and can be used to create infinite variations in vodka cocktails.

And you really can’t beat the color.

a pink cocktail with foam and blackberry garnish with blackberry simple syrup, lemons, and blackberries.

Classic cocktails

The vodka sour

The sour family of cocktails is one of the first that a home bartender should master. They are easy recipes for great cocktails with a perfect balance between sweet and tart.

The basic formula for the sour is two ounces of spirit, three quarters of an ounce of fresh lemon juice or lime juice, and three quarters of an ounce of simple syrup. You can, of course, make it sweeter or more sour depending on your preference.

The egg white was not included in the original sour cocktails, which date back to the 1800s. Leave it out if you’re concerned about foodborne illness. Or keep it in if you want that frothy topping no matter what.

You can take the above sour formula and change it up just by using a different base liquor. Make your sour with rum and lime juice, and you have a daiquiri. Change it to tequila, and that’s a margarita. Make it with gin and lime juice, and it’s a gimlet.

And then add in your favorite flavored simple syrup.

Making simple syrup

Simple syrups for cocktails are just sugar syrups, usually with equal amounts of sugar and water. This blackberry simple syrup is responsible for the flavor and that bright pink color in this vodka sour.

Making blackberry simple syrup is so very simple. Just combine sugar and water in a small saucepan over low heat until the sugar dissolves. Add the berries, turn off the heat, and let it cool.

a cutting board with cup of sugar and frozen blackberries.

Unlike my blackberry swirl cream cheese brownies, there’s no need struggle with a fine mesh strainer to remove the seeds for this blackberry syrup. Just strain the syrup with a normal sieve into a glass jar. The berries you leave behind are a great little snack.

Tips and tricks

How to make a vodka sour

Tips from the wise quacker: the vodka sour is a shaken cocktail. If you want to include the optional egg white in your blackberry vodka sour, the key to getting the layer of foam is the dry shake method. Doing a dry shake allows you to create a foamy top without diluting your cocktail.

First, add the cocktail ingredients to your cocktail shaker without any ice and shake. Hold it tight, because the pressure is going to build up in your shaker! After about 10 to 20 seconds or so, add a half cup of ice cubes to the shaker, shake, and strain.

You can serve this up in a chilled coupe or other cocktail glass. Or serve it in a rocks glass with a large ice cube.

Substitutions and variations

  • Skip the egg white and add soda or tonic water for a blackberry vodka soda or blackberry vodka tonic.
  • Change up the flavor in this classic cocktail with any other homemade simple syrup.
  • Make a blackberry margarita with tequila, Cointreau, lime juice, and the blackberry simple syrup.
  • Garnish with a lemon slice, lemon twist, or maraschino cherry.


What is the likelihood of getting sick from the raw egg white?

I cannot give you a probability. Please use your personal judgement, because consumption of raw eggs may result in foodborne illness.The original sour recipe had no egg white, so you can omit it if you are concerned about raw egg whites. If you can find them, you could use pasteurized egg whites or a tablespoon of aquafaba.

Can I freeze the blackberry simple syrup?

Maybe. You can try to freeze your simple syrup in an ice cube tray, but it may only work with a deep freezer. That’s because adding sugar or other solutes to water lowers the freezing point.

Related recipes

Love sours? Check out two Aperol sour variations, one with gin and egg white and the other without, and two Frangelico sours. Or make a Porn Star martini, which is really a passion fruit sour. Or browse the uglyducklingbakery beverage archives for other delicious cocktail recipes such as the elderflower Collins, brandy manhattan, or Negroni spritz.

Or, if you love blackberries, check out this blackberry lemon loaf cake, blackberry curd tart, or blackberry apple pie.

Vodka Sour with Blackberry Simple Syrup

5 from 1 vote
Category: Drinks
Cuisine: Unspecified
Prep Time: 30 minutes
Cook Time: 5 minutes
Total Time: 35 minutes
Servings: 1
Calories: 210kcal
Adding blackberry simple syrup to a classic vodka sour produces a well-balanced cocktail with bright flavors of lemon and blackberry. The optional egg white creates a smooth mouthfeel that makes the sipping of this blackberry vodka cocktail even easier.
Print Recipe


  • 1 Cocktail shaker


Blackberry simple syrup

  • 1 cup sugar
  • 1 cup water
  • 1 cup blackberries fresh or frozen

Blackberry vodka sour

  • 2 ounces vodka
  • ¾ ounce lemon juice freshly squeezed
  • ¾ ounce blackberry simple syrup
  • 1 egg white pasteurized or see note
  • 2 blackberries for garnish


Blackberry simple syrup

  • Combine the sugar and water in a small pot over medium-low heat, stirring occasionally until the sugar has dissolved in the water. Do not let boil.
    1 cup sugar, 1 cup water, 1 cup blackberries
  • Add the blackberries and cook for a minute or so. Turn off the heat and let the syrup cool to room temperature.
  • Strain the syrup into a clean glass jar.

Blackberry vodka sour

  • Combine the vodka, lemon juice, ¾ ounce of blackberry simple syrup from above, and the egg white in a cocktail shaker without ice, and shake for 10 to 20 seconds. Hold your shaker tight, because it will try to pop open.
    2 ounces vodka, ¾ ounce lemon juice, ¾ ounce blackberry simple syrup, 1 egg white
  • Add a handful of ice to the shaker and shake again for 5 seconds.
  • Strain into a chilled coupe and garnish with blackberries.
    2 blackberries


The dry shake – shaking first without ice – is important for you to get the layer of foam in this blackberry vodka sour without diluting your cocktail.
NOTE: consumption of raw eggs may result in foodborne illness.


Calories: 210kcal | Carbohydrates: 18g | Protein: 3g | Fat: 1g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Sodium: 63mg | Potassium: 91mg | Fiber: 1g | Sugar: 17g | Vitamin A: 10IU | Vitamin C: 9mg | Calcium: 7mg | Iron: 1mg
Love this recipe?Mention @Uglyducklingbakery or tag #uglyducklingbakery!

What’s next

If you make this blackberry vodka sour, please leave a comment and rating here. Or share a pic with me on Instagram and join the 52 weeks of cocktails challenge.

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