Photo: Simon Eugster --– Simon / ?! 11:18, 28 June 2007 (UTC), CC BY-SA 3.0 · source

Jam · From Bladwijzer

Jostaberry jam

Updated on 9 October 2026

• Makes: ± 5 jars of 250 ml
• Time: 45 min
• From: Jostaberry

Ingredients

• 1 kg jostaberries
• 100 ml water
• 500 g jam sugar with pectin (2:1)
• juice of ½ lemon

Method

1. Rinse the berries and snip off the stalks and flower remains with scissors.
2. Simmer the berries with the water for 10 minutes, until they are soft and burst; the skins are firm.
3. Mash them roughly with a masher, or blend briefly with a stick blender.
4. Add the jam sugar and lemon juice and bring to the boil, stirring.
5. Boil hard for 4 minutes (or as the packet says) and skim off the foam.
6. Fill hot, clean jars to the brim, close and turn them upside down for 5 minutes.

Storing: A year in a cool, dark place; once opened, in the fridge.