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Homemade Blackberry-Lime Jam: Easy 3-Ingredient Recipe

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This homemade blackberry-lime jam is made with just three ingredients and no pectin. It’s easy enough for beginners and tastes like summer in a jar.

Ingredients

Scale
  • 4 cups fresh blackberries (about 600 grams)
  • 2 cups granulated sugar (400 grams)
  • 2 large fresh limes (zest and juice)

Instructions

  1. Rinse the blackberries gently under cold water. Pick out any stems, leaves, or questionable berries. If berries are huge, give them a rough chop, but leaving them whole is fine.
  2. Wash the limes well. Zest them to get about 2 teaspoons of zest, then juice them to get about 3-4 tablespoons of fresh lime juice. Set both aside.
  3. In a large heavy-bottomed pot, add the blackberries and sugar. Stir gently to coat the berries. Let sit for about 10 minutes to macerate.
  4. Turn the heat to medium-high and bring the mixture to a boil, stirring occasionally. Once boiling hard, reduce the heat to medium for a steady, active simmer. Stir every minute or so to prevent sticking.
  5. After about 10 minutes of simmering, stir in the lime zest and juice. Continue cooking and stirring until the jam thickens and foam subsides.
  6. Test for doneness using the cold plate test: place a small plate in the freezer before cooking. Drop a spoonful of jam onto the cold plate, let it sit for 30 seconds, then run your finger through it. If it wrinkles and holds its shape, it’s done. If not, cook another 2-3 minutes and test again.
  7. Once done, skim off the foam with a spoon. Ladle the hot jam into sterilized jars, leaving about ¼ inch headspace. Wipe rims clean, screw on lids, and let cool completely on the counter.

Notes

Don’t walk away from the pot; jam can burn quickly. Use the cold plate test for doneness rather than relying on time. Don’t double the batch—make two separate batches if needed. Use a splatter guard to prevent burns from hot jam splatters.

Nutrition

Keywords: blackberry jam, lime jam, homemade jam, easy jam recipe, no pectin jam, 3-ingredient jam, blackberry lime jam

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