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Low-Carb Cold Brew Coffee Granita

4.4 stars, average of 17 ratings

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There is nothing as refreshing as icy granita on a hot summer day. Even better, when it's made with frozen coffee!

This low-carb granita can't be any easier to prepare. You will only need three simple ingredients — or two if you like your coffee sweetener-free. It's the perfect treat with almost zero carbs and zero calories!

I like to make mine using cold brew from quality ground coffee but you can use regular chilled espresso coffee or if you aren't fussy you can even use instant chilled coffee.

I like to serve mine with our Keto Coffee Creamer. If you are short on time, simply mix some heavy whipping cream with almond milk and add a pinch of cinnamon, vanilla powder or even cocoa powder to make mocha flavoured keto granita. And if you want to pimp up your sugar-free granita, just add a dash of our Low-Carb Baileys!

I love this coffee granita but if you're not a fan of coffee, try our Sugar-Free Lemon Granita (soooo refreshing!) or Sugar-Free Strawberry Rosé Granita — they are equally delicious and really easy to make!

Optional Add-Ons to Your Coffee Granita

Hands-on Overall

Serving size about 1 cup/ 240 ml

Allergy information for Low-Carb Cold Brew Coffee Granita

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

Nutritional values (per serving, about 1 cup/ 240 ml)

Net carbs1 grams
Protein0.3 grams
Fat0 grams
Calories6 kcal
Calories from carbs 72%, protein 20%, fat 8%
Total carbs1 gramsFiber0 gramsSugars1 gramsSaturated fat0 gramsSodium5 mg(0% RDA)Magnesium7 mg(2% RDA)Potassium116 mg(6% EMR)

Ingredients (makes 4 servings)


  1. Place the ground coffee in a large jar (at least 1 L). Add cold filtered water and stir to combine. Low-Carb Cold Brew Coffee Granita
  2. Close the jar with a lid and place in the fridge overnight or for up to 24 hours. Low-Carb Cold Brew Coffee Granita
  3. To strain the coffee, line a fine-mesh strainer with a piece of cheesecloth or a nut milk bag.
  4. Pour the coffee through through, let it drip freely. Do not squeeze or press. Discard the leftover coffee grounds trapped in the cheesecloth. Low-Carb Cold Brew Coffee Granita
  5. Transfer the coffee into a clean pitcher or a jar. Add powdered sweetener and stir to combine. Low-Carb Cold Brew Coffee Granita
  6. To make the granita, pour the coffee into a container or baking dish that can fit into your freezer. Low-Carb Cold Brew Coffee Granita
  7. Freeze until the mixture becomes icy on the edges, about 30 minutes. Using a fork, scrape and mash the icy edges and combine with the unfrozen juices. Place back in the freezer and repeat up to 4 times, until the mixture is flaky - the granita is ready. (Tip: To make the granita very smooth, scrape more with a fork, or place in a food processor and pulse until it resembles smooth snow.) Low-Carb Cold Brew Coffee Granita
  8. To serve, place the granita into serving glasses. Store any leftover granita in the freezer for up to 6 months. I like to keep mine in single-serving freezer bags. Low-Carb Cold Brew Coffee Granita
  9. Optionally, serve with heavy whipping cream, almond milk, Keto Coffee Creamer, Dairy-Free Keto Condensed Milk, Keto Condensed Milk or our Low-Carb Baileys. Low-Carb Cold Brew Coffee Granita

Ingredient nutritional breakdown (per serving, about 1 cup/ 240 ml)

Net carbsProteinFatCalories
Coffee (prepared), liquid
0 g0.3 g0 g2 kcal
Erythritol (natural low-carb sweetener)
1 g0 g0 g4 kcal
Total per serving, about 1 cup/ 240 ml
1 g0.3 g0 g6 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)

ohmigoodness, this is just in time for a major heat wave expected here tomorrow. I'm going right downstairs to soak the coffee. Sounds delicious.

Thank you Eveline! We had a huge heatwave a few days ago and I made this one: Sugar-Free Lemon Granita - soooo refreshing!

Thank you so much for this amazing idea. I made this last night and have a delicious cooling treat to enjoy now. I put pumpkin spice with my sweetener. And I served it with double cream, chocolate nibs and more spice. Whatever I can find in the kitchen really!! Thanks again 😋

Thank you Amila, pumpkin pie spice sounds delicious! 😊