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An open jar of sugar free blueberry jam with a spoon

Sugar Free Blueberry Jam

Katrin Nürnberger from sugarfreelondoner.com
Here's a staple for your fridge: sugar free blueberry jam! It's delicious as a spread on low carb bread or as a fruity sauce with yoghurt, pancakes or waffles.
Course Breakfast, Condiment
Cuisine British
Prep Time 1 minute
Cook Time 20 minutes
Total Time 21 minutes
Servings 14
Calories 11.3kcal


  • 2 cups / 300g blueberries, frozen or fresh
  • 2 tbsp water
  • juice of ½ lemon
  • 2 pinches xanthan gum
  • optional: 1 tsp vanilla extract


  • Put the blueberries, water and lemon juice (and vanilla, if using) in a non stick pan, cover and bring to a boil.
  • Remove the lid and cook on a medium heat for ca 15 minutes, stirring regularly. The mixture will reduce by ⅓ and thicken. Smash the berries with a spoon while they cook.
  • You can blend the mixture if you wish to have a smooth consistency. I like it the way it is, with a few bits and pieces in it.
  • At the end, take a couple of pinches xanthan gum and sprinkle it evenly into the pot, stirring well afterwards. Xanthan gum is a brilliant thickening agent and is also used in gluten free baking, so it does come in handy. You only need a tiny amount - it's quite remarkable.
  • Pour the mixture into a clean jar and store in the fridge. This recipe fills a small (200ml) jar.


A this mixture makes 200g jam, I calculated 1 portion=14g=1tbsp.
Recipe Tip - How sweet your jam is will depend on the natural sweetness of your blueberries. If you find the jam is not sweet enough, feel free to add a teaspoon or two of powdered erythritol or 4-8 drops of stevia glycerite


Serving: 14g | Calories: 11.3kcal | Total Carbohydrates: 2.7g | Protein: 0.1g | Fat: 0.1g | Potassium: 12mg | Fiber: 0.6g | Sugar: 1.9g