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Low-Carb Watermelon & Lime Sorbet

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Summer and watermelon are almost synonyms. I can't imagine summer without fresh chilled watermelon! A couple of days ago, I asked my Facebook followers if there is any cocktail they are missing on their low-carb journey. Well, watermelon sorbet is definitely not a cocktail recipe but it's great for hot summer days like these!

To make this low-carb and sugar-free sorbet I used my ice cream maker but you can simply freeze it and churn every 30 minutes until you get the desired consistency of sorbet.

Although watermelon has a high Glycemic Index (GI = 72), it has a very low Glycemic Load, which measures how much insulin will be released by your body for a given food measured in standard portions. You always need to consider serving size to get the best estimate of how it will affect your blood sugar levels.

Other health benefits of watermelon are:

  • it's very high in water (more than 90%) which makes it filling
  • it's relatively low in net carbs and calories (7.2g net carbs and 30 kcal per 100g)
  • it's high in vitamin A
  • it contains lycopene, a carotenoid with antioxidant activity and has potential cancer-fighting abilities

Remember, only avoid watermelon or any fruit if your carbs limit is very low (20 g or less of net carbs a day).

Hands-on Overall

Serving size about 2 scoops/ 85 g/ 3 oz

Allergy information for Low-Carb Watermelon & Lime Sorbet

✔  Gluten free
✔  Dairy free
✔  Nut free
✔  Nightshade free
✔  Pork free
✔  Avocado free
✔  Coconut free
✔  Fish free
✔  Shellfish free
✔  Beef free

Nutritional values (per serving, about 2 scoops/ 85 g/ 3 oz)

Net carbs6 grams
Protein0.5 grams
Fat0.1 grams
Calories25 kcal
Calories from carbs 89%, protein 7%, fat 4%
Total carbs6.4 gramsFiber0.3 gramsSugars4.8 gramsSaturated fat0 gramsSodium1 mg(0% RDA)Magnesium8 mg(2% RDA)Potassium94 mg(5% EMR)

Ingredients (makes 8 servings)


  1. Cut the watermelon in cubes and remove all the seeds. Place in a blender together with freshly squeezed lime juice and stevia to taste. Pulse until smooth. Low-Carb Watermelon & Lime Sorbet
  2. Pour into the ice-cream maker and process according to the manufacturer's instructions. Mine took just about 45 minutes. This varies based on the make of your ice-cream maker (30-60 minutes) and also depends how solid you want the sorbet to be. If you don't have an ice-cream maker, simply place the diced watermelon in the freezer for at least 3 hours and blend until smooth with lime juice and stevia. I wanted mine to be really frozen, so it took 45 minutes. Low-Carb Watermelon & Lime Sorbet
  3. When done, using a rubber spatula, put into small containers and place in the freezer. Low-Carb Watermelon & Lime Sorbet
  4. This will help you with portion control and prevent you from eating all the ice-cream in one go. If you serve the sorbet straight away, garnish with lime wedges and fresh mint. Enjoy! Low-Carb Watermelon & Lime Sorbet

Ingredient nutritional breakdown (per serving, about 2 scoops/ 85 g/ 3 oz)

Net carbsProteinFatCalories
Watermelon, fresh
5.4 g0.5 g0.1 g23 kcal
Lime (juice), fresh
0.7 g0 g0 g2 kcal
Stevia extract (SweetLeaf or NuNaturals, natural low-carb sweetener)
0 g0 g0 g0 kcal
Total per serving, about 2 scoops/ 85 g/ 3 oz
6 g0.5 g0.1 g25 kcal

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Martina Slajerova
Creator of

Martina Slajerova

I changed the way I ate in 2011, when I was diagnosed with Hashimoto’s, an autoimmune disease that affects the thyroid. I had no energy, and I found it more and more difficult to maintain a healthy weight.

That’s when I decided to quit sugar, grains, and processed foods, and to start following a whole-foods-based ketogenic approach to food.

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Comments (4)

Hey great recipe as usual 😊
Could I do something similar with berries, maybe adding some water because I suppose berries don't have the same water content than watermelon.
I'm really craving some blueberry or strawberry sorbet lately but all the recipes I find use either bananas or real syrup (sugar + water) and I don't believe that fiber syrup would work ... or would it ? But anyway the quantities that I would have to use are way too sweet for my taste and too expensive

Thank you Stephanie! YEs, I would add some water if you want to use berries (especially strawberries). You may like these popsicles (you can skip the cheesecake layer or use more berries): Sugar-Free Red, White and Blue Berry Popsicles

Love how simple it is! I don't have an ice-cream maker and it worked well just blending frozen watermelon! Thanks for all the amazing posts 😊

Thanks, there will be more summer recipes soon! 😊