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!

Jump to:

• What's in Keto Blackberry Jam
• How to Make Keto Blackberry Jam
• Is Sugar Free Jam Keto Friendly?
• What are the Carbs in Blackberries?
• Tips for the Best Keto Jam
• What Keto Recipes Can I Use with Blackberry Jam?
• More Keto Sauce Recipes

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.

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!

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

• Blackberries
• Allulose, confectioners
• Lemon juice
• Water
• Xanthan gum

*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.  

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

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

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

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.

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.

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 ½ cup serving, blackberries are the perfect low carb snack or ingredient for jams and sauces.

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.

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%.

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.

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.

More Keto Sauce Recipes

• Raspberry Sauce
• Strawberry Sauce
• Salted Caramel Sauce
• Sugar-Free Nutella
• 5 Minute Lemon Curd
• Blueberry Sauce