Cooked Blackberry Jam - CERTO Crystals

25 8 (1-cup/250-mL) jars or 128 servings, 1 Tbsp. (15 mL) each
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8 (1-cup/250-mL) jars or 128 servings, 1 Tbsp. (15 mL) each

Enjoy the flavours of summer year round with this homemade Cooked Blackberry Jam. With just 3 simple ingredients - fresh blackberries, sugar and CERTO Pectin Crystals - you can make this delicious jam in just minutes.

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What You Need

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Make It

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  • Crush blackberries, one layer at a time. Measure exactly 5 cups prepared blackberries into large saucepan. Add pectin crystals; mix well.
  • Bring to full rolling boil on high heat. Add sugar; mix well. Return to full rolling boil; cook 1 min., stirring constantly. Remove from heat. Stir and skim foam for 5 min. to prevent fruit from floating to surface.
  • Pour immediately into warm sterilized jars, filling to within 1/4 inch of rims. Cover with lids. Let stand at room temperature 24 hours or until set.

Keeping it Safe

Cooked jam may be stored at room temperature, unopened, for up to 1 year. Once opened, refrigerate jam and use within 3 weeks.

How to Accurately Measure the Sugar

To ensure accuracy of the sugar measure when preparing jams or jellies, use a dry measuring cup to measure the sugar, then place all the measured sugar in a separate bowl before adding it to the boiling fruit mixture in saucepan.


  • 8 (1-cup/250-mL) jars or 128 servings, 1 Tbsp. (15 mL) each

Nutritional Information

Serving Size 8 (1-cup/250-mL) jars or 128 servings, 1 Tbsp. (15 mL) each
Calories 50
% Daily Value
Total fat 0g
Saturated fat 0g
Cholesterol 0mg
Sodium 0mg
Carbohydrate 12g
Dietary fibre 0g
Sugars 12g
Protein 0.1g
Vitamin A 0 %DV
Vitamin C 2 %DV
Calcium 0 %DV
Iron 0 %DV

* Nutrition information is estimated based on the ingredients and cooking instructions as described in each recipe and is intended to be used for informational purposes only. Please note that nutrition details may vary based on methods of preparation, origin and freshness of ingredients used.

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