James's Cola Cake recipe - The Great British Bake Off

Ingredients

• 100g 70% dark chocolate, broken up
• 235g unsalted butter, plus extra for greasing
• 400g plain flour, sifted
• 500g caster sugar
• 1 tsp ground cinnamon
• 40g cocoa powder, sifted
• 1¼ tsp bicarbonate of soda
• 270ml buttermilk
• 2 large eggs
• 50ml cola concentrate
• 1 x 425g tin of black cherries, in light syrup
• 300g unsalted butter, softened
• 40g double cream
• 1 tsp vanilla paste
• ½ tsp salt
• ½ tsp white wine vinegar
• 720g icing sugar, sifted
• 25g cocoa powder, sifted
• 100g 70% dark chocolate, finely chopped
• 10g unsalted butter
• 100ml double cream
• Fresh edible flowers
• Fresh cherries, with stalks