2 tsp tamarind paste
2 tsp tamarind sauce
½ tsp bicarbonate of soda
150g/5½oz soft dark brown sugar
75g/2¾oz dark or light soft brown sugar
½ tsp ground cinnamon
100²µ/3½´Ç³ú pitted dates, ideally Sayer
2 tsp ground ginger
1 tbsp pistachio nuts, roughly chopped, to decorate
½ tsp flaked sea salt
100²µ/3½´Ç³ú self-raising flour
2 cubes stem ginger in syrup, drained
3 tbsp stem ginger syrup (from the jar)
1 tbsp black treacle
30g/1oz unsalted butter, softened, plus extra for greasing
40g/1½oz unsalted butter
150ml/5fl oz double cream
1 large free-range egg
4 tbsp whisky