Go Back
A jar of homemade blackberry jam with fresh blackberries on a wooden surface.

Blackberry Jam (Homemade)

This recipe provides a quick and easy way to make delicious homemade blackberry jam, perfect for spreading on toast or pastries.
Print Recipe Pin Recipe
Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 6 jars
Calories: 50
Ingredients Equipment Method Notes

Ingredients
  

Main
  • 4 cups blackberries
  • 4 cups granulated sugar
  • 1/4 cup lemon juice

Equipment

  • large pot
  • canning jars
  • ladle

Method
 

Instructions
  1. Wash and sort the blackberries, discarding any bruised or overripe fruit.
  2. In a large pot, combine the blackberries, sugar, and lemon juice.
  3. Bring the mixture to a boil over medium-high heat, stirring constantly, then reduce heat and simmer for about 20-30 minutes, or until thickened.
  4. Carefully ladle the hot jam into sterilized jars, leaving 1/4 inch headspace.
  5. Process the jars in a boiling water bath for 10 minutes to seal.

Notes

For a smoother jam, mash the blackberries slightly before cooking. You can test the jam for thickness by placing a small amount on a cold plate and seeing if it gels.