Preparation Time: 10 minutes
Cooking Time: 30 minutes
Cooling Time: 1 hour
Total Time: 1 hour 40 minutes
Yield: About 3 cups (24 servings)
Ingredients
- 4 cups fresh blueberries (about 600 g)
- 2 cups granulated sugar
- 2 tablespoons fresh lemon juice
- 1 teaspoon lemon zest
- 2 tablespoons water
- 1 teaspoon vanilla extract (optional)
- ½ teaspoon unsalted butter (optional, reduces foam)
Instructions
Step 1: Prepare the Blueberries
Wash the blueberries thoroughly under cold running water. Remove any stems, leaves, or damaged berries. Drain well.
Step 2: Mash the Fruit
Place the blueberries in a large saucepan. Using a potato masher or the back of a spoon, gently crush about half of the berries while leaving some whole for texture.
Step 3: Add the Ingredients
Stir in the sugar, lemon juice, lemon zest, and water. If using vanilla extract, reserve it until the end of cooking.
Mix everything well until the sugar begins dissolving.
Step 4: Cook the Jam
Place the saucepan over medium heat and stir frequently until the sugar has completely dissolved.
Increase the heat to medium-high and bring the mixture to a rolling boil.
Continue cooking for 20–25 minutes, stirring regularly to prevent sticking. As the blueberries cook, they will release their juices and naturally thicken.
If foam forms on the surface, skim it off with a spoon or stir in the butter to reduce foaming.
Step 5: Test the Consistency
To check if the jam is ready, place a small spoonful on a chilled plate and let it sit for one minute. Push it gently with your finger. If the surface wrinkles slightly, the jam has reached the proper consistency.
If it’s still runny, continue cooking for another 3–5 minutes and test again.
Step 6: Finish the Jam
Remove the saucepan from the heat.
Stir in the vanilla extract if desired.
Allow the jam to cool for about 10 minutes before transferring it to clean, sterilized jars.
Step 7: Store
Seal the jars while still warm.
Refrigerate for immediate use or process in a boiling water bath for long-term shelf storage according to safe home-canning guidelines.
Tips for Perfect Blueberry Jam
- Use ripe, sweet blueberries for the best flavor.
- Fresh lemon juice helps balance sweetness and supports natural thickening.
- Stir frequently during cooking to prevent scorching.
- Avoid overcooking, as the jam will continue to thicken while cooling.
- Sterilize jars properly if planning to store the jam for several months.
- Frozen blueberries can also be used without thawing first.
Recipe Variations
Low-Sugar Blueberry Jam
Reduce the sugar and use a low-sugar pectin for a lighter version.
Cinnamon Blueberry Jam
Add ½ teaspoon ground cinnamon for a warm, comforting flavor.
Blueberry Vanilla Jam
Increase the vanilla extract for a rich, dessert-like taste.
Mixed Berry Jam
Combine blueberries with raspberries, strawberries, or blackberries for a colorful mixed berry preserve.
Honey Blueberry Jam
Replace part of the sugar with natural honey for added depth of flavor.
Serving Suggestions
Blueberry Jam is delicious served with:
- Toast
- English muffins
- Biscuits
- Pancakes
- Waffles
- Scones
- Yogurt
- Oatmeal
- Cheesecake
- Ice cream
- Peanut butter sandwiches
- Thumbprint cookies
- Croissants
It also makes an excellent filling for pastries, cakes, cupcakes, and homemade donuts.
Storage Instructions
Store unopened canned jars in a cool, dark place for up to 12 months.
Once opened, refrigerate and use within 3 weeks.
Homemade jam that has not been canned should always be stored in the refrigerator and consumed within 2–3 weeks.
For longer storage, freeze the jam in freezer-safe containers for up to 6 months.
Why You’ll Love This Recipe
- Easy to prepare with simple ingredients
- Rich, natural blueberry flavor
- No artificial preservatives
- Beautiful deep-purple color
- Perfect for gifting
- Great for breakfast or desserts
- Beginner-friendly recipe
- Easily customizable with spices and fruit combinations
Nutrition Information (Per Serving – Approximately 1 Tablespoon)
- Calories: 48
- Carbohydrates: 12 g
- Sugar: 11 g
- Protein: 0.1 g
- Total Fat: 0 g
- Saturated Fat: 0 g
- Fiber: 0.3 g
- Sodium: 0 mg
- Potassium: 12 mg
- Vitamin C: 2 mg
- Calcium: 2 mg
- Iron: 0.1 mg