Black Forest gâteau - Good Food Middle East

Ingredients

• 175g salted butter, plus extra for greasing
• 200g bar dark chocolate
• 300g plain flour
• 375g golden caster sugar
• 25g cocoa
• 1 tsp bicarbonate of soda
• 2 medium egg
• 200g buttermilk or natural yoghurt
• 425g can pitted cherry, 2 tbsp juice reserved, rest drained
• 100g morello cherry jam
• 4 tbsp kirsch (or more juice from a can if you want it to be non-alcoholic)
• 500ml tub double cream
• 3 tbsp icing sugar
• 1 small punnet fresh cherries (optional)