Ingredients:
- 4 cups (600g) fresh blackberries
- 2 cups (400g) granulated sugar
- 2 tbsp (30ml) fresh lemon juice
- 1/4 tsp (1.5g) salt
Instructions:
- Place the rinsed blackberries in a heavy-bottomed pot.
- Pour the granulated sugar over the berries and stir gently to coat.
- Cover the pot with a lid and let it sit at room temperature (or in the fridge for warmer climates) for 12 hours to allow the berries to release their juices.
- Remove the lid and use a potato masher to crush the berries to your preferred consistency, leaving some chunks for a rustic feel.
- Stir in the fresh lemon juice and salt.
- Place the pot over medium-high heat and bring the mixture to a rolling boil, stirring constantly.
- Reduce heat to medium and simmer for 15–20 minutes until the jam thickens and looks glossy.
- Perform the sheet test: dip a frozen spoon or a small piece of a chilled plate into the jam. Push the jam with your finger; if it wrinkles (sheets) rather than runs, it is done.
- Remove from heat and carefully pour the hot jam into sterilized jars, leaving about 1/4 inch of headspace.
- Seal tightly and let cool at room temperature before refrigerating.