Blackberry Marshmallow Cake Recipe - Great British Chefs

Ingredients

• 75g of cocoa powder
• 1 tsp vanilla extract
• 120ml of boiling water
• 175g of unsalted butter, softened
• 150g of caster sugar
• 150g of soft dark brown sugar
• 4 eggs, beaten
• 1/2 tsp salt
• 2 3/4 tsp baking powder
• 280g of plain flour, sifted
• 180ml of whole milk
• 300g of blackberry purée
• 120g of caster sugar
• 20g of pectin
• 3 tbsp of cassis, or other blackberry liqueur
• 200g of marshmallow creme, such as Marshmallow Fluff
• 150g of unsalted butter, softened
• 300g of icing sugar, sifted
• 2 tbsp of whole milk
• 45g of unsalted butter
• 75g of dark chocolate, 70%
• 100g of dark chocolate, tempered
• blackberries, 1 punnet
• gold leaf