Description
Canning Blueberry Jam is a sweet and tart homemade preserve made with fresh blueberries, sugar, lemon juice, and pectin. It captures the taste of summer in every jar.
Ingredients
Scale
- 6 cups fresh blueberries (ripe, firm, rinsed, stems removed)
- 4 1/2 cups granulated sugar
- 1/4 cup bottled lemon juice
- 1 box powdered or liquid pectin (follow package instructions)
Instructions
- Wash and sterilize jars in boiling water for 10 minutes. Keep warm until ready to use.
- Wash lids and rings, then simmer lids in hot (not boiling) water.
- Crush blueberries in a large heavy pot, leaving some whole for texture.
- Stir in sugar, lemon juice, and powdered pectin (if using). If using liquid pectin, set aside for later.
- Bring mixture to a full rolling boil over medium-high heat, stirring constantly.
- Boil hard for 1 minute while stirring. If using liquid pectin, remove from heat and stir it in as directed.
- Optional: Test set by placing a spoonful on a chilled plate. If it wrinkles when pushed, it’s ready.
- Ladle hot jam into sterilized jars, leaving 1/4 inch headspace.
- Remove air bubbles with a non-metallic spatula and adjust headspace if needed.
- Wipe rims clean and place lids and rings finger-tight.
- Process jars in a boiling water canner for 10 minutes (adjust for altitude).
- Remove jars and let cool 12–24 hours. Check seals. Store sealed jars at room temperature; refrigerate unsealed jars.
Notes
Blueberry jam has a perfect balance of sweet and tart flavor. For best results, always use bottled lemon juice for proper acidity and follow pectin instructions carefully.
- Prep Time: 30 minutes
- Cook Time: 60 minutes
- Category: Preserves
- Method: Water Bath Canning
- Cuisine: American
Nutrition
- Serving Size: 1 tablespoon
- Calories: 50
- Sugar: 12g
- Sodium: 0mg
- Fat: 0g
- Saturated Fat: 0g
- Unsaturated Fat: 0g
- Trans Fat: 0g
- Carbohydrates: 13g
- Fiber: 0g
- Protein: 0g
- Cholesterol: 0mg