Blackberry jam

Ingredients

• 1 kg ripe blackberries, picked dry
• 500 g sugar

Missing an ingredient?

• What to use instead of sugar

Instructions

1. Pick over the blackberries and discard any damaged ones.
2. Put them in a large heavy-bottomed pan and cook them on their own over high heat until they release their juice, about 10 minutes.
3. Add the sugar and stir until it dissolves.
4. Boil it hard, stirring with a wooden spoon and skimming off the foam, until it sets: put a drop on a cold plate and, if it wrinkles when you push it with your finger, it's ready.
5. Pour it into clean, hot, dry jars and close them right away. It's low in sugar: once opened, keep it in the fridge. If you add apple, the author uses a little more sugar.

Nutrition facts

Approximate, per serving (about 20 g). Calculated with data from USDA FoodData Central.