1. Whisk together the quark and yogurt, adding in 2 tbsp jam. Swirl the remaining jam through to create a marbled effect.
2. Carefully spoon the mousse into four jam jars and top with berries. Screw on lids and stand upright in the freezer for 2 hours.
Store appropriately to keep as cool as possible before serving
500g (1lb) quark 200g (7oz) fat-free vanilla yogurt 8 tbsp Streamline (low sugar) blackcurrant jam 150g (5oz) raspberries 150g (5oz) blueberries
Time: 5 minutes, plus 2 hours freezing time Serves: 4 Nutrition: 195 calories, 2g fat, 1g sat. fat