1 tbsp golden syrup
1 tbsp bicarbonate of soda
100g/3陆oz soft dark brown sugar
175g/6oz pitted dried dates
150g/5陆oz soft dark brown demerara sugar
200g/7oz self-raising flour, plus extra for dusting
2 tbsp black treacle
1 tbsp black treacle
1 tbsp vanilla bean paste
50g/1戮oz unsalted butter, plus extra for greasing
80驳/2陆辞锄 butter
200ml/7fl oz double cream
2 free-range eggs