● 1 kg blackberries
● 600 g sugar
● juice of 1/2 lemon
Wash the blackberries well and cut off the stems using a pair of scissors.
Put the berries in a pot with the sugar and leave it aside for 3-4 hours for the berries to release their juices.
Put the pot on high heat, bring to a boil and then lower the heat.
Boil until the jam reaches the desired consistency, about 30-40 minutes.
More or less time may be needed.
To see if the jam has the desired consistency, put some on a saucer and allow to cool. Then test it using a spoon, and if the jam drips from the spoon in slow drops, it is ready.