James Martin makes a delicious Christmas tree pavlova with fresh blackberries for the festive season on Home Comforts at Christmas.

The ingredients are: 6 free-range egg whites, 450g caster sugar, 1 tbsp cornflour, 1 tbsp white wine vinegar, ¼ tsp ground cloves, ½ tsp ground ginger, 1 cinnamon stick, 1 lemon, peeled, 1 orange, peeled, 400g fresh blackberries, 600ml double cream, 1 tbsp vanilla bean paste and 50ml crème de cassis.