Blackberry preserves are a fruit spread made with fresh blackberries that capture the taste of blackberries for a variety of recipes to enjoy throughout the year.

Wild blackberries are delicious when they are picked right from the plant. We have a few blackberry bushes growing in our backyard garden. They bear fruit from about May through July where we live. This year, the boys kept track of every blackberry we picked and we had almost 2,000 blackberries!

With all of those berries, we had to find a few ways to use them. We ate many of them fresh, but couldn’t keep up with the number of berries we were getting, some days over 100!

Some of the berries went in the freezer to use for recipes that call for frozen berries, but we wanted to make some with fresh berries, too. The first thing we made was blackberry jam, although we left large enough pieces that is became preserves.

Servings Suggestions

Spread your wild blackberry preserves over toast for breakfast
Drizzle the preserves over a bowl of vanilla ice cream
Use blackberry preserves in your overnight oats recipes
Add to storebought or homemade yogurt for more flavor

Blackberry Preserves Recipe Tips

Make sure to fully sanitize your mason jars before adding the blackberry preserves.
If you have more than 4 cups of berries, make them in different batches so you don’t overload your pot.
The pectin serves as a thickener that reacts with the sugar.
You can use citric acid in place of the lemon juice to keep the blackberries fresh.
If you want less sugar, lower the amount of sugar to about 2 cups of sugar, making sure you can still coat the whole fruit in the first step.
The more you mash the blackberries in step 3, the fewer chunks you will have in the final product. Preserves usually have the most chunks of fruit, while jam is in between, and jelly has no chunks of fruit left and is strained to remove all of the fruit.
To make jam, increase the sugar in step 1 to 4 cups for a 1:1 ratio of fruit to sugar.

Preparing & Sealing Mason Jars

Place room temperature jars into a large saucepan and cover with hot water.
Bring the water bath to a full boil for 10 minutes.
Remove the jars from the water and place them on clean paper towels while preparing the blackberry preserves.
After filling the jars with the preserves, leaving about 1/4 inch of headspace, place them in the same large saucepan and cover with water.
Bring the water to a boil and cook for at least 10 minutes, until the jars are sealed. If they don’t seal, you may need new lids for your jars.
After boiling, let jars rest 5 minutes in water before removing to cool undisturbed for 24 hours. Check seals before storing in a cool, dry place.

What’s the Difference between Jam and Preserves?

Jam is made with crushed fruit and is spreadable with small bits. Preserves keep larger fruit pieces or whole berries and have a looser, chunkier texture.

Seed Method: Your Preference Matters

For a smoother, seedless preserve: process through a food mill or fine mesh strainer, then use just the juice.

For a rustic, textured preserve: return a spoonful of the crushed seeds to the mixture—this adds a homespun feel, as featured in various Southern recipes.

Do You Need Pectin? Gel Test Instead

Blackberries are naturally high in pectin—and this recipe can work without added pectin. If you omit it, cook until the jam reaches 220 °F (105 °C) or passes the cold‑plate gel test: drop a spoonful onto a chilled plate—if it wrinkles when nudged, it’s ready. Use added pectin only if desired for quicker setting.

Troubleshooting FAQs

Using frozen berries?
Frozen berries work well—just allow additional cooking time to reach the set point.

Preserves not thickening after cooling?
Let it sit for 24–48 hours. If still thin, gently reheat with more sugar or lemon and test again.

Foam on top?
Skim after cooking or add a small pat of butter before boiling to reduce foam.

Have leftover fresh berries? Use them up in this classic blackberry pie recipe.

Homemade Blackberry Preserves Step by Step

Ingredients

4 cups fresh blackberries
3 cups sugar
½ cup lemon juice
¾ oz pectin

Preparation

Place blackberries in a large bowl and gently fold the sugar into the berries.

Let the berries rest for up to 1 hour.

Use a potato masher to squeeze the blackberries.

Add the blackberries to a large stockpot and mix in the lemon juice and pectin.

Set to high heat and bring to a rolling boil for 8-10 minutes without stirring.

Remove the pan from the heat and allow it to cool for about 10-15 minutes.

Pour your prepared blackberry preserves into sanitized mason jars.

Homemade Blackberry Preserves Leftovers

Storage: This will last about 2-3 weeks in the refrigerator without sealing the mason jars. If you seal the mason jars, the preserves will last 1 year in the pantry until opened.

Recipe

Originally Published On: September 16, 2024

Last Updated On: August 3, 2025

Blackberry preserves spread over toast on a plate with a few blackberries

Homemade Blackberry Preserves

Blackberry preserves are a fruit spread made with fresh blackberries that capture the taste of blackberries for a variety of recipes to enjoy throughout the year.

Prep Time 25

Cook Time 20

Rest Time 1 15

Total Time 2

Course:

Homemade Staple

Cuisine:

American

Diet

Gluten Free

Vegan

Vegetarian

Keyword:

berries

blackberry

fresh berries

fresh fruit

jam

mason jars

preserves

Dietary Needs:

Dairy-Free

Egg-Free

Gluten-Free

Nut-Free

Vegan

Servings: oz

5 from 4 votes