Description
This homemade blackberry jam recipe is a simple and delicious way to preserve the vibrant flavor of fresh blackberries. With only a few ingredients and easy steps, you can create a luscious, sweet jam perfect for spreading on toast, adding to desserts, or gifting. Optional vanilla and cinnamon add depth and warmth to the jam’s natural fruity sweetness.
Ingredients
Scale
Jam Ingredients
- 4 cups fresh blackberries (or frozen if fresh is unavailable)
- 2 cups granulated sugar
- 1 tablespoon lemon juice
- 1/2 teaspoon vanilla extract (optional for extra flavor)
- 1/4 teaspoon ground cinnamon (optional for added warmth)
Instructions
- Prepare the Fruit: Use a potato masher or a fork to crush the blackberries and release their natural juices. For a smoother texture, you may use an immersion blender to puree the berries slightly before cooking.
- Cook the Jam: Combine the crushed blackberries, granulated sugar, lemon juice, vanilla extract, and cinnamon in a pot. Stir the mixture well and bring it to a simmer over medium heat.
- Simmer and Thicken: Once the mixture reaches a simmer, reduce the heat to low and let it cook gently for 25 to 30 minutes. Stir frequently to prevent sticking and burning. The jam will thicken as it cooks.
- Check Consistency: To test if the jam is ready, place a small spoonful onto a cold plate and let it cool briefly. Run your finger through the jam—if it wrinkles and holds its shape, it has reached the perfect consistency.
- Cool and Store: Remove the pot from heat and let the jam cool for about 10 minutes. Transfer the jam into sterilized jars. You can store the jam in the refrigerator for up to 3 weeks or preserve it long-term by processing the jars in a water bath for 10 minutes. Let jars cool completely before storing.
- Serve: Enjoy your homemade blackberry jam spread on toast, muffins, or as a sweet addition to your favorite recipes.
Notes
- Use ripe blackberries for the best flavor and natural sweetness.
- Frozen blackberries work well if fresh ones are unavailable; thaw before using.
- Add optional vanilla extract and cinnamon for extra depth in flavor.
- Ensure jars and lids are sterilized properly to avoid contamination if you plan to store long-term.
- Stir frequently during cooking to prevent burning.
- Properly sealed canned jars can be stored comfortably for up to 1 year in a cool, dark place.
