" Blog da Horta Biológica: Wild Blackberry Jam - Homemade Super Delicious Recipe

Wild Blackberry Jam - Homemade Super Delicious Recipe

It was back in the summer that we made this wild blackberry jam and today we share with you our recipe.

Making jams from wild berries is a fun activity to do with the family. We picked the blackberries from the brambles that insist on growing in our garden, but if you don't have a garden you can take a walk in the countryside or in the woods, pick the fruits and then make several types of sweets.

Let's see how to make this recipe. At the end of this post you can also see our educational video where we show, not only the step by step recipe, but also a little of the development of the plant, from the flower and pollination to harvesting the fruit.


  • 2Kg Wild blackberries
  • 1,3Kg Brown Sugar
  • 3 Cinnamon sticks
  • Juice of 2 small lemons


  • 1 Large deep pot
  • 1 Hand blender
  • 1 Citrus squeezer
  • 1 Large wooden spoon
  • 1 Kitchen tongs or 2 large spoons
  • Several pre-sterilized glass jars
  • Utensils for pouring the jam into the jars. Depending on the size of the jars, these can be spoons, funnels, or whatever else you have in the kitchen that might come in handy for this task.


  1. Start by washing the blackberries.
  2. Place the blackberries in a deep pot.
  3. Add 3 cinnamon sticks, the sugar and the lemon juice.
  4. With a large wooden spoon, mix everything.
  5. Turn on the heat to high.
  6. When it starts boiling, lower the heat to minimum.
  7. After 10 minutes, remove the cinnamon sticks using a kitchen tongs or two large spoons.
  8. Let simmer for 40 minutes and stir occasionally.
  9. After 40 minutes turn off the heat and transfer the jam immediately to the jars so they can be vacuum sealed.

Important Tips

Before turning off the heat you should check if the jam is just right, in other words, if it is thick enough. If it is still too liquid, you should leave it on the heat a little longer. If, when passing the spoon over the jam, it forms a fine thread, it is ready. Be careful not to make it too thick!

To vacuum seal the jars, you must transfer all the jam immediately while it is still very hot, close the jars tightly, and store them upside down so that all the air can come out of the jars. When vacuum happens, you hear the lid make a clicking sound. You can also tell if it has vacuumed if the lid is sucked down. Jars that don't vacuum should be stored in the refrigerator and be the first to be consumed. Those that vacuum can be stored in a cool, dry place and can last for several years.

This recipe is made with blackberries, but the same method can be followed for other berries. We hope you enjoy it! 

Here is our step by step video and some beautiful images of the blackberries developing before the harvest.

VIDEO - Wild Blackberry Jam - Homemade Super Delicious Recipe

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