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This spooky low-carb cocktail is perfect for Halloween! I used homemade blackberry-lime syrup and substituted the commonly used simple syrup with powdered Erythritol. There are other options you can try:
- Skip the powdered sweetener in the blackberry juice and make your own simple syrup like in this Spicy Low-Carb Margarita. The only drawback of making simple syrup this way is that it may partially crystallise once it's chilled.
- You could use NuNaturals Simple Syrup. Apart from plain simple syrup, it's available in several different flavours such as Ginger Syrup which worked wonderfully in my Keto Ginger & Rhubarb Creamsicles. Just remember to use the recommended amount as too much would make your cocktail way too sweet.
- Lastly, you can just use a few drops of stevia. NuNaturals are my favourite as they don't taste bitter.
Note that this recipe makes about 2 1/4 cups (530 ml/ 18 fl oz) blackberry juice. This will be enough for 6 cocktails. Fibre is counted partially (25%) as most of the pulp and seeds are discarded.
Looking for a spooky treat? Try my Halloween Keto Pizza, Spooky Eyeball Cookies, Cheesy Keto Spinach Crackers, and even more Halloween Keto Recipes.
Hands-on Overall
Serving size cocktail
Nutritional values (per cocktail)
Net carbs4.7 grams
Protein1.1 grams
Fat0.4 grams
Calories166 kcal
Calories from carbs 71%, protein 16%, fat 13%
Total carbs5.7 gramsFiber1 gramsSugars0 gramsSaturated fat0 gramsSodium8 mg(0% RDA)Magnesium17 mg(4% RDA)Potassium135 mg(7% EMR)
Ingredients (makes 1 cocktail)
Homemade blackberry syrup:
- 450 g fresh or frozen blackberries (1 lb)
- 1/4 cup lime or lemon juice (1-2 pieces)
- 1 cup water (240 ml/ 8 fl oz)
- 1/2 cup powdered Erythritol or Swerve (80 g/ 2.8 oz)
Each Cocktail:
- 90 ml homemade blackberry juice (3 fl oz)
- 1/4 cup vodka (60 ml/ 2 fl oz)
- ice
- Optional: sparkling water (soda water) to top up
- Optional: acai powder or freeze-dried berry powder mixed with granulated Erythritol, and fresh blackberries for decoration
Instructions
- Place the blackberries in a saucepan.
- Add the lime juice and water. Bring to a boil over a medium heat. Boil for 3-5 minutes.
- Once softened, mash the blackberries using a fork.
- Pour through a fine mesh sieve and using a spoon, press the blackberries through so that only the skins and seeds remain in the sieve.
- Pour into a jar. The juice should be quite thick, almost the consistency of syrup.
Note: this recipe makes about 2 1/4 cups (530 ml/ 18 fl oz) blackberry juice. This will be enough for 6 cocktails.
- Add the powdered Erythritol and mix until combined. Let it cool and refrigerate until ready. The juice will keep refrigerated for up to 5 days.
- To serve, optionally decorate your cocktail glasses by dipping the rims in water and then in a mixture of acai powder (or any berry powder). Fill each glass with ice and pour in the vodka.
- Add the sweetened blackberry juice.
- Decorate with more fresh blackberries or mint leaves and serve.
Black Widow Cocktail (KetoDiet blog)
Ingredients (makes 1 cocktail)
Homemade blackberry syrup:
- 450 g fresh or frozen blackberries (1 lb)
- 1/4 cup lime or lemon juice (1-2 pieces)
- 1 cup water (240 ml/ 8 fl oz)
- 1/2 cup powdered Erythritol or Swerve (80 g/ 2.8 oz)
Each Cocktail:
- 90 ml homemade blackberry juice (3 fl oz)
- 1/4 cup vodka (60 ml/ 2 fl oz)
- ice
- Optional: sparkling water (soda water) to top up
- Optional: acai powder or freeze-dried berry powder mixed with granulated Erythritol, and fresh blackberries for decoration
Instructions
- Place the blackberries in a saucepan.
- Add the lime juice and water. Bring to a boil over a medium heat. Boil for 3-5 minutes.
- Once softened, mash the blackberries using a fork.
- Pour through a fine mesh sieve and using a spoon, press the blackberries through so that only the skins and seeds remain in the sieve.
- Pour into a jar. The juice should be quite thick, almost the consistency of syrup.
Note: this recipe makes about 2 1/4 cups (530 ml/ 18 fl oz) blackberry juice. This will be enough for 6 cocktails.
- Add the powdered Erythritol and mix until combined. Let it cool and refrigerate until ready. The juice will keep refrigerated for up to 5 days.
- To serve, optionally decorate your cocktail glasses by dipping the rims in water and then in a mixture of acai powder (or any berry powder). Fill each glass with ice and pour in the vodka.
- Add the sweetened blackberry juice.
- Decorate with more fresh blackberries or mint leaves and serve.
Nutrition (per cocktail)
Calories166kcal
Net Carbs4.7g
Carbohydrates5.7g
Protein1.1g
Fat0.4g
Saturated Fat0g
Fiber1g
Sugar0g
Sodium8mg
Magnesium17mg
Potassium135mg
Detailed nutritional breakdown (per cocktail)
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