24g/1oz golden syrup
400g/14oz plain flour, plus extra for dusting the tins
1½ tsp baking powder
300²µ/10½´Ç³ú dark soft brown sugar
300²µ/10½´Ç³ú caster sugar
4½ tbsp cocoa powder
500g/1lb 2oz icing sugar
24g/1oz sunflower oil
3 tbsp vanilla extract
180g/6oz dark chocolate, broken into pieces
375g/13oz dark chocolate, broken into pieces
184²µ/6½´Ç³ú dark chocolate, broken into pieces
100²µ/3½´Ç³ú dark chocolate, broken into shards
180g/6oz salted butter, at room temperature, plus extra for greasing the tins)
250g/9oz salted butter, at room temperature
40g/1½oz salted butter
375g/13oz double cream
6 large free-range eggs, beaten
270ml/½ pint milk