Blackberry Jam According to Grandma's Recipe

Ingredients

• 1.2 kg blackberries
• 500 g gelatin sugar (2:1)
• 1 untreated lemon (juice)
• 60 ml cassis

Instructions

1. 1.

   Rinse the blackberries, remove stems, and let them macerate with the sugar and lemon juice for about 2 hours. Then bring to a boil while stirring and simmer for about 4 minutes until sparkling. Add the liqueur and perform a setting test.

2. 2.

   Fill prepared jars and seal tightly, allowing them to cool down.