Wash the blueberries gently and put them in the bowl together with the lemon juice, cook with the basket placed on the lid instead of the measuring beaker: 20 min. 100° Reverse speed 1.

Now if you prefer, you can pass the mixture through a sieve to remove the seeds, but I didn't do it.

Add the sugar and cook constantly with the basket placed on the lid instead of the measuring beaker: 45 min. 100° Reverse speed 1.

Check the cooking by doing the saucer test and if necessary continue for a few minutes at Varoma temperature.

Pot in sterilized jars and pasteurize (how to do it, read here) for 30 minutes.

Store them away from light and moisture.

Once the jars are opened, they should be kept in the fridge... Buon appetito!