Natural Blueberry Jam

I’ve been making this homemade blueberry jam for years, and it never gets old – there’s something so satisfying about turning fresh blueberries into a sweet, spreadable treat. The secret is using fresh lemon juice for natural pectin, which helps it set perfectly without any store-bought additives. Trust me, once you try this simple recipe, you’ll never go back to the jarred stuff!

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 1050-1150
• Protein: 2-3 g
• Fat: 1-2 g
• Carbohydrates: 270-290 g

Ingredients

• 4 cups blueberries (rinsed and stems removed)
• 1 1/4 cups granulated sugar
• 1 1/2 lemons (zested and juiced for natural pectin)
• 1/8 teaspoon salt
• 1/2 teaspoon pure vanilla extract

Step 1: Prepare Ingredients and Combine

• 4 cups blueberries
• 1 1/4 cups granulated sugar
• 1 1/2 lemons
• 1/8 teaspoon salt

Rinse the blueberries and remove any stems, then measure out all ingredients.

In a heavy-bottomed pot, combine the blueberries, granulated sugar, lemon zest, lemon juice, and salt.

The lemon juice provides natural pectin which helps the jam set properly, while the zest adds bright citrus flavor that complements the blueberries beautifully.

Step 2: Cook Jam to Setting Point

• blueberry mixture from Step 1

Place the pot over medium-high heat and stir occasionally until the mixture comes to a rolling boil.

Once boiling, reduce the heat to medium and simmer for 7-10 minutes, stirring frequently to prevent sticking and ensure even cooking.

I like to crush some of the berries with the back of my spoon as it cooks—this releases more juice and pectin from the fruit, which helps thicken the jam naturally while keeping some whole berries for texture.

Continue cooking until the mixture reaches 220°F on a candy thermometer (the gel point for jam), or until a small spoonful placed on a cold plate wrinkles slightly when pushed with your finger.

Step 3: Finish and Jar

• cooked jam from Step 2
• 1/2 teaspoon pure vanilla extract

Remove the pot from heat and stir in the vanilla extract, which adds a subtle depth that enhances the blueberry flavor.

Let the jam cool for about 5 minutes—this brief rest allows the mixture to thicken slightly and helps prevent splattering when you transfer it.

Pour the warm jam into sterilized jars, leaving about 1/4 inch headspace.

I find that letting jam cool slightly before jarring gives you better control and reduces the risk of burns.

Natural Blueberry Jam

Delicious Natural Blueberry Jam recipe with step-by-step instructions.

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Prep Time 5 minutes mins

Cook Time 15 minutes mins

Total Time 20 minutes mins

Servings: 3 cups of jam

Calories: 1100

Ingredients Method

Ingredients

  

• 4 cups blueberries (rinsed and stems removed)
• 1 1/4 cups granulated sugar
• 1 1/2 lemons (zested and juiced for natural pectin)
• 1/8 teaspoon salt
• 1/2 teaspoon pure vanilla extract

Method

 

1. Rinse the blueberries and remove any stems, then measure out all ingredients. In a heavy-bottomed pot, combine the blueberries, granulated sugar, lemon zest, lemon juice, and salt. The lemon juice provides natural pectin which helps the jam set properly, while the zest adds bright citrus flavor that complements the blueberries beautifully.
2. Place the pot over medium-high heat and stir occasionally until the mixture comes to a rolling boil. Once boiling, reduce the heat to medium and simmer for 7-10 minutes, stirring frequently to prevent sticking and ensure even cooking. I like to crush some of the berries with the back of my spoon as it cooks—this releases more juice and pectin from the fruit, which helps thicken the jam naturally while keeping some whole berries for texture. Continue cooking until the mixture reaches 220°F on a candy thermometer (the gel point for jam), or until a small spoonful placed on a cold plate wrinkles slightly when pushed with your finger.
3. Remove the pot from heat and stir in the vanilla extract, which adds a subtle depth that enhances the blueberry flavor. Let the jam cool for about 5 minutes—this brief rest allows the mixture to thicken slightly and helps prevent splattering when you transfer it. Pour the warm jam into sterilized jars, leaving about 1/4 inch headspace. I find that letting jam cool slightly before jarring gives you better control and reduces the risk of burns.