Ingredients

• 4 cups blackberries
• 1 cup white sugar
• 2 tablespoons cornstarch
• 0.25 teaspoons ground cinnamon
• 0.25 teaspoons ground allspice
• 0.5 teaspoons lemon juice

Instructions

1. 1 Gather all ingredients.
2. 2 Mash blackberries in a saucepan with a potato masher.
3. 3 Stir in sugar until juices are released. Remove 1 tablespoon blackberry juice from the saucepan; mix with cornstarch in a small bowl. Stir cornstarch mixture back into the saucepan.
4. 4 Bring blackberries to a boil; cook, stirring often, until jam has thickened, about 15 minutes.
5. 5 Stir in cinnamon and allspice. Remove saucepan from the heat and allow jam to cool, 30 to 45 minutes.
6. 6 Transfer jam to a bowl, cover, and refrigerate until chilled. Stir in lemon juice before serving.

Nutrition per serving