Steamed pudding

• 1 steamed pudding, coconut, blackberry, blackberries, dessert, pudding, fruit
  Ingredients (Serves 4) 200g/7oz blackberries, fresh or frozen (defrosted if frozen) 50g/2oz caster sugar 1 tbsp cornflour 2 tbsp water For the sponge 100g/4oz butter, at room...