Simple Blackberry Jam Recipe

Simple Blackberry Jam Recipe

This Simple Blackberry Jam is an easy and fresh recipe, which is made with juicy blackberries and lemon. It’s a classic, foolproof recipe for preserving summer fruit, ready in about 45 minutes.

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Simple Blackberry Jam Ingredients

  • 5 cups blackberries
  • ½ cup water
  • 1 lemon, zested and juiced
  • 3 ½ to 4 cups sugar
  • 2 sheets gelatin (or 1 teaspoon powdered gelatin)

How To Make Simple Blackberry Jam

  1. Prepare the fruit: In a large, non-reactive pot, combine the blackberries, lemon zest, lemon juice, and water. Place over medium heat and bring to a simmer, mashing the blackberries with a potato masher or the back of a spoon as they heat up.
  2. Add sugar and cook: Add the sugar to the pot and stir until it has completely dissolved. Continue to simmer for about 20 minutes, then bring the mixture to a rolling boil.
  3. Prepare the gelatin: While the jam is cooking, soak the gelatin sheets in a small bowl of ice water until they become soft and pliable (about 5 minutes). If using powdered gelatin, sprinkle it over 2 tablespoons of cold water and let it “bloom” for 5 minutes.
  4. Add gelatin and finish: Remove the boiling jam from the heat. Squeeze any excess water from the softened gelatin sheets and stir them into the hot jam until they have completely dissolved.
  5. Cool and store: Let the jam cool completely. As it cools, it will thicken. Once cool, pour the jam into clean, sterilized canning jars. For long-term storage, process the jars in a boiling water bath for 10 minutes. Otherwise, store in the refrigerator.
Simple Blackberry Jam Recipe
Simple Blackberry Jam Recipe

Recipe Tips

  • How do I know when the jam is set? The most reliable method is the cold plate test. Before you start, place a small plate in the freezer. When you think the jam is ready, put a small spoonful on the cold plate and return it to the freezer for a minute. If it wrinkles when you push it with your finger, it’s ready.
  • Can I use frozen blackberries? Yes, frozen blackberries work perfectly. There is no need to thaw them first; just add them directly to the saucepan with the other ingredients. The initial cooking time may be slightly longer.
  • Do I have to use gelatin? Gelatin helps the jam to set. If you prefer not to use it, you can cook the jam for a longer period (30-40 minutes) until it thickens naturally from the pectin in the fruit and the reduction of liquid.
  • Can I make this without seeds? Yes. After simmering the fruit initially (step 1), you can press the mixture through a fine-mesh sieve to remove the seeds before adding the sugar and continuing with the recipe.

What To Serve With Blackberry Jam

This classic preserve is wonderfully versatile and is a staple on the breakfast table.

  • Spread on hot, buttered toast or croissants
  • Served with warm scones and clotted cream
  • Swirled into plain yogurt or oatmeal
  • As a filling for thumbprint cookies or layer cakes

How To Store Blackberry Jam

  • Refrigerate: If you are not processing the jam in a water bath, it must be stored in the refrigerator. It will keep for up to 1 month.
  • Canning: Properly sealed and processed jars of jam can be stored in a cool, dark place like a pantry for up to one year.

Blackberry Jam Nutrition Facts

  • Serving Size: 1 tablespoon
  • Calories: 55 kcal
  • Fat: 0g
  • Carbohydrates: 14g
  • Protein: 0g

Nutrition information is estimated and may vary based on ingredients and cooking methods used.

FAQs

Why did my jam not set?

This usually means it was not cooked for long enough or that the gelatin was not properly incorporated. Ensure the jam reaches a full rolling boil and that the bloomed gelatin is fully dissolved off the heat. Remember, it will thicken significantly as it cools.

Can I reduce the amount of sugar?

It is not recommended to significantly reduce the sugar in a traditional jam recipe like this one. The sugar is not just for sweetness; it is essential for the jam to set properly and also acts as a preservative.

Why use a non-reactive pot?

Acidic ingredients like blackberries and lemon juice can react with certain metals like aluminum or un-enameled cast iron. This can give the jam a metallic taste. It’s best to use a stainless steel or enameled pot.

Try More Recipes:

Simple Blackberry Jam Recipe

Recipe by MarryCourse: Side DIshCuisine: AmericanDifficulty: Easy
Servings

5

servings
Prep time

15

minutes
Cooking time

30

minutes
Calories

55

kcal

A classic homemade blackberry jam with a fresh, vibrant fruit flavor, perfect for preserving the taste of summer.

Ingredients

  • 5 cups blackberries

  • ½ cup water

  • 1 lemon, zested and juiced

  • 3 ½ to 4 cups sugar

  • 2 sheets gelatin

Directions

  • In a large pot, simmer the blackberries, lemon zest, juice, and water, mashing the berries as they cook.
  • Stir in the sugar until it dissolves. Simmer for 20 minutes, then bring to a rolling boil.
  • While it boils, soak the gelatin sheets in ice water for 5 minutes until soft.
  • Remove the jam from the heat. Squeeze the excess water from the gelatin and stir it into the hot jam until dissolved.
  • Let the jam cool completely, then pour it into sterilized jars.
  • For long-term storage, process the sealed jars in a boiling water bath for 10 minutes. Otherwise, store in the refrigerator.

Notes

  • For the best flavor, use fresh, ripe, in-season blackberries.
  • Be very careful when working with the hot sugar mixture.
  • This is a fantastic way to preserve the fresh flavor of summer blackberries.
  • The jam will thicken considerably as it cools.

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