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Three jars of dark red jam, made from a classic blackberry jam recipe—two covered with red and white polka dot cloths, one open with a gold spoon. A blue and white towel sits in the foreground on a marble surface.

Homemade Blackberry Jam Recipe

This homemade blackberry jam recipe is quick, easy, and perfect for beginners. Learn how to make sweet, flavorful jam with simple ingredients.

Course Side Dish
Cuisine American
Keyword blackberry jam, Blackberry jam canning recipe, blackberry jam recipe, How to make blackberry jam
Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Servings 7 8oz cups
Author momma lew

Ingredients

  • 8 cups blackberries
  • 6 ½ cups sugar
  • 1 pkg Sure-Jell Premium Fruit Pectin
  • ½ tsp butter

Instructions

  1. Prepare lids and jars. 
  2. In a stockpot, crush 8 cups of blackberries over medium heat using a potato masher. 
  3. Press the crushed fruit through a small mesh strainer or cheese cloth to remove seeds. 
  4. Measure 6 1/2 cups of sugar into a separate bowl. 
  5. Measure 5 cups of crushed blackberries into a large saucepan. 
  6. Stir in Sure-Jell pectin into fruit. Stir in butter (this reduces foaming). 
  7. Bring mix to a rolling boil on high heat. Stir constantly. 
  8. Add sugar to fruit mixture. Bring back to a rolling boil. Boil for 1 minute. 
  9. Remove from heat. Remove any foam. 
  10. Ladle your homemade blackberry jam right away into your prepared jars. Fill them within a 1/2 inch to the top.
  11. Cover with lids. 
  12. Place jars into boiling water. Be sure to cover jars by 1-2 inches. Add more boiling water if needed. Cover.
  13. Boil your homemade blackberry jam jars for 10 minutes. 
  14. Remove the jars and place on a towel to cool. When cooled, press the center of the jars. If they spring back to you then you will need to refrigerate your jam since it did not process properly. 
  15. Let your homemade blackberry jam stand for 24 hours and then store in a cool, dry place. 

Recipe Video