Ingredients
- 4 cups fresh blackberries, rinsed and mashed
- 1 1/2 cups granulated sugar
- 1 tablespoon lemon juice (optional)
- 1 packet (1.59 oz or as per brand instructions) instant/no-cook/freezer jam pectin
Instructions
- Rinse the blackberries and gently mash them in a large bowl until you reach your desired consistency (some chunks, some juice).
- In a separate bowl, thoroughly mix the sugar and instant pectin.
- Add the sugar-pectin mixture to the mashed berries and stir well.
- Mix in the lemon juice if using, and continue stirring for 3–4 minutes until the sugar is fully dissolved.
- Spoon the jam into clean, freezer-safe containers, leaving about 1/2 inch of space at the top.
- Let the filled containers sit at room temperature for 30 minutes to set.
- Store the jam in the freezer for up to 1 year, or in the refrigerator for up to 3 weeks after thawing.
Notes
- Use freezer-safe containers and leave room for expansion.
- Frozen blackberries can be used—just thaw and drain them first.
- Do not skip the pectin; it is essential for setting the jam without cooking.
- Blend the berries for a smoother jam texture if preferred.
- Follow pectin package instructions closely for the best results.
Nutrition
- Serving Size: 1 tablespoon
- Calories: 40
- Sugar: 9g
- Sodium: 0mg
- Fat: 0g
- Saturated Fat: 0g
- Unsaturated Fat: 0g
- Trans Fat: 0g
- Carbohydrates: 10g
- Fiber: 1g
- Protein: 0g
- Cholesterol: 0mg