Cut the apple and the onion into cubes about the same size. Heat both together with the barberries and a dash of water in a small saucepan to bring to the boil. Season to taste with ginger, curry, sugar, salt and pepper.
Now steam everything for about 20 minutes. Stir in between! Put the resulting mass through a sieve or mix in a blender.
Pour the hot chutney into a screw-top jar and turn it upside down and let it cool down.
Tastes good in combination with game as an alternative to lingonberries.