Keto Blackberry Jam

This sugar free Blackberry Jam only takes four ingredients and a few minutes to make! It’s perfect served with gluten free pancakes or biscuits!

blackberry jam in spoon being held up

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I’ll be the first to admit, when I first started Keto, I thought making homemade jam was a thing of the past. So, imagine my surprise when I was taste testing this recipe and honestly couldn’t tell a difference in traditional sugary jam and this Keto friendly version.

closeup of blackberry jam in white bowl

I happened to find a great sale on these huge, beautiful blackberries at my local grocery store. So, I stocked up and decided to create a jam that would pair perfectly with these homemade Keto Biscuits and these all time favorite gluten free Fluffy Pancakes!

closeup of blackberry jam on spoon

Boy, did I nail it! You just have to try this sugar free blackberry jam recipe to believe how sweet and delicious it is. And just look at the rich and vibrant color!

What’s in Keto Blackberry Jam

*Exact measurements are listed in the recipe card below.

How to Make Keto Blackberry Jam

Add the blackberries, allulose, lemon juice and water to a sauce pan and cook over medium/low heat for 8-10 minutes.  

blackberries in pan with sugar

The berries will start to break down and the sauce will thicken some as it begins to cook.

blackberries in pan with juice

Once the berries have started to plump up and break apart, use a masher or fork to mash up the blackberries.

cooked blackberries in saucepan

Sprinkle the xanthan gum over the top while stirring. Easy does it! It only takes a little.

blackberries in pan with whisk

Continue cooking for another 2 minutes, give it a good whisk then remove from the stove and allow it to cool.  Remember that it will thicken as it cools so resist the temptation to add more xanthan gum.

blackberry jam over food chopper

Allow to cool before serving.  If you prefer a smooth sauce, you can blend it in a food processor, until you get your desired consistency. 

Store in an airtight container in the fridge for 5-7 days.

closeup of blackberry jam in white bowl

Is Sugar Free Jam Keto Friendly?

The recipe for this low carb jam is definitely Keto friendly. It replaces sugar with a sugar substitutes and uses only a little lemon juice and xanthan gum for thickener.

What are the Carbs in Blackberries?

Blackberries have next to the lowest net carbs than any other berry, right next to raspberries. With only 3.5 net carbs per 1/2 cup serving, blackberries are the perfect low carb snack or ingredient for jams and sauces.

overhead view of blackberry jam in white bowl

Tips for the Best Keto Jam

This low carb blackberry jam couldn’t be easier to make. I mean, who doesn’t love a 10 minute jam recipe, right? And while it’s super simple, here are a few suggestions to ensure it turns out perfect everytime:

How to Choose the Right Blackberries for Sugar Free Jam

While there is nothing like picking your own fresh berries, for most of us, blackberry season wraps up around the end of August. The great news is there are really great brands, like Driscolls, that supply quality berries throughout the year.

To get the best blackberries for jam or sauce, you’ll want to look at the color and firmness of the berries. Blackberries should be dark purple/black and look quiet plump. If they’re light purple or have some red spots throughout, they are going to be hard and fairly tart which is not what you want in jam.

blackberries

What’s the Best Sweetener for Sugar Free Blackberry Jam?

There are two types of sugar substitutes I prefer in most all of my Keto recipes. First, the sweetener can not have a weird after taste. Second, it must behave the same way when cooking as regular sugar.

Swerve brand sweetener has a wonderful line of sugar substitutes I use quite often recipes. However, I’ve recently found that Allulose Confectioners has no cooling effect and truly mimics the way powdered sugar taste. It may not be available in some of your grocery stores, but you can get it on Amazon and some of the bigger named groceries stores. I think you’ll be pleasantly surprised if you give it a try.

If you have Swerve on hand, then by all means use it, but for this recipe I recommended giving Allulose a try if you can.

Wholesome Yum’s Besti Powdered Allulose is my absolute favorite allulose to use! It has perfect texture and far exceeds anything else I’ve ever tried. Use code: KCC10 to save 10%.

Best Allulose Powdered
Besti Powdered Allulose

Can I Make Low Carb Blackberry Jam in Advance? Can I Freeze Keto Blackberry Jam?

You certainly can make this in advance. This is a rather small batch recipe. The thought behind that is since it’s so incredibly easy to make, you can have fresh jam in minutes. But, let’s face it, we can’t be making homemade jam before work in the mornings. This sugar free jam will keep for up to 5-7 days, stored in a mason jar or air tight container.

Once you try this low carb jam recipe, you may very well decide to make several batches in advance. If you do, you can freeze it and have some on hand anytime you want it.

Just take the cooled jam and put it in a freezer safe bag, make sure you squeeze out any remaining air, and place in the freezer for up to a few months.

blackberry jam in spoon being held up

How Do I Thicken Blackberry Keto Jam?

Xanthan gum thickens recipes and also prevents ingredients from separating. A word of caution, this stuff goes a long way so only use the amount listed in the recipe card below because as the jam begins to cool the xanthan gum jumps into action and firms it right up to the perfect consistency.

What Keto Recipes Can I Use with Blackberry Jam?

Other than biscuits and pancakes or waffles, you can use this sugar free jam as a base for a sweet and tangy vinaigrette salad dressing, or BBQ sauce.

You can add a little water to the jam and thin it out to make a fantastic Keto blackberry sauce for sugar free ice cream.

closeup of blackberry jam on spoon

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blackberry jam in spoon being held up

Keto Blackberry Jam

This sugar free Blackberry Jam only takes four ingredients and a few minutes to make! It's perfect served with gluten free pancakes or biscuits!
5 from 4 votes
Author: Julianne
Servings 16
PREP 2 minutes
COOK 12 minutes
TOTAL 14 minutes

Ingredients
 

  • 12 ounces fresh blackberries
  • 1/3 cup allulose, confectioners
  • 2 tablespoons fresh lemon juice
  • 2 tablespoons water
  • 1/4 teaspoon Xanthan gum

Instructions
 

  • Add the blackberries, allulose, lemon juice and water to a sauce pan and cook over medium/low heat for 8-10 minutes. The berries will start to break down and the sauce will thicken as it cooks. Using a masher or fork, mash up the blackberries.
  • Sprinkle the xanthan gum over the top and whisk. Continue cooking for another 2 minutes, then remove from the stove and allow it to cool. Remember that it will thicken as it cools.
  • Allow to cool before serving. If you prefer a smooth sauce, you can blend it in a food processor, until you get your desired consistency. Store in an airtight jar in the fridge for 5-7 days or freeze.

Recipe Notes

Makes approx. 1 cup

*Make sure to scroll up and read the post for substitutions, additions and helpful tips for making this recipe.

Course Condiment
Cuisine American
Calories 10kcal
Nutrition Facts
Keto Blackberry Jam
Amount per Serving
Calories
10
% Daily Value*
Carbohydrates
 
2
g
1
%
Fiber
 
1
g
4
%
Sugar
 
1
g
1
%
* Percent Daily Values are based on a 2000 calorie diet.

*Nutritional data is provided as a courtesy and is accurate to the best of my knowledge. You can verify it using the nutrition calculator of your choice. All data is based on net carbs, without sugar alcohol: Swerve, Erythritol, Monk Fruit or Allulose.

© Copyright for Keto Cooking Christian LLC. Please use the share buttons to share on social media, but please do not copy/paste the recipe.

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5 from 4 votes

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Recipe Rating




31 Comments

  1. 5 stars
    WOW. Just wow, so delicious, and easy to make. I used fresh blackberries from my daughters garden. this turn out perfectly. I strained it. also thank you for the scripture.

  2. 5 stars
    Just made this for my husband with fresh blackberries that we have an abundance of in our yard right now and he said it was perfect! Now, gotta make a whole bunch more batches to freeze. Thank you for this recipe. Followed it exactly!

    1. That’s awesome to hear! I wish I had fresh blackberries in my yard. This jam freezes well if you’d like to make extra for later.

      1. I just made your jam I’m looking forward to make strawberry and blueberry and thank you for Bible verses

      2. You’re so welcome and I’m glad you’re enjoying the recipes and scripture!

  3. This recipe worked great for us! I used 12 6 ounce containers and scaled all the measurements up. I did not have enough powdered swerve to complete the recipe, so I used Steviva granular (from Azure Standard). Everyone in my family loves it, so my batch probably won’t last all winter like I had planned. Thank you for all of your great recipes.

      1. I have never tried liquid allulose in this recipe, so I am hesitant to say one way or the other.

  4. Can this be made seedless and can I also make the raspberry jam seedless and what do I need to do this and will I need to add anything to the recipe

    1. I am sorry to hear that. Between the lemon juice and xanthan gum, it should have been a very nice and thick jam like consistency. I have made it many many times and it always thickens perfectly.

    2. you may have had the heat too low or not added quite enough xantham gum. I’ve also gotten better results with using Guar Gum for liquid applications vs Xantham for things like bread and pastries.