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4.2 stars, average of 84 ratings
By Martina Slajerova, updated October 19 2021
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This spooky low-carb co*cktail 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 . Just remember to use the recommended amount as too much would make your co*cktail 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 co*cktails. 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 co*cktail
Allergy information for Low-Carb Black Widow co*cktail
✔Gluten free
✔Dairy free
✔Egg free
✔Nut free
✔Nightshade free
✔Pork free
✔Avocado free
✔Coconut free
✔Fish free
✔Shellfish free
✔Beef free
Pescatarian
Vegetarian
Vegan
Nutritional values (per co*cktail)
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 co*cktail)
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 co*cktail:
- 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 co*cktails. - 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 co*cktail 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 co*cktail (KetoDiet blog)
4.2 stars, average of 84 ratings
Low-carb co*cktail with homemade blackberry-lime syrup and vodka. This is the perfect sugar-free and low-calorie co*cktail for your Halloween table!
Hands on10m
Overall30m
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Ingredients (makes 1 co*cktail)
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 co*cktail:
- 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 co*cktails.
- 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 co*cktail 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 co*cktail)
Calories166kcal
Net Carbs4.7g
Carbohydrates5.7g
Protein1.1g
Fat0.4g
Saturated Fat0g
Fiber1g
Sugar0g
Sodium8mg
Magnesium17mg
Potassium135mg
Detailed nutritional breakdown (per co*cktail)
| Net carbs | Protein | Fat | Calories |
|---|---|---|---|
| Total per co*cktail | |||
| 4.7 g | 1.1 g | 0.4 g | 166 kcal |
| Homemade Blackberry Juice (KetoDiet blog) | |||
| 4.7 g | 1.1 g | 0.4 g | 38 kcal |
| Vodka, distilled alcoholic beverage (~40% vol) | |||
| 0 g | 0 g | 0 g | 128 kcal |
| Ice cubes | |||
| 0 g | 0 g | 0 g | 0 kcal |
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