3cm/1¼in piece (15g/½oz) fresh root ginger, peeled and finely grated
50²µ/1¾´Ç³ú golden syrup
300²µ/10½´Ç³ú plain flour
2 tsp baking powder
¼ tsp bicarbonate of soda
100g/3½oz soft dark brown sugar
50²µ/1¾´Ç³ú soft light brown sugar
50²µ/1¾´Ç³ú caster sugar
1½ tsp ground cinnamon
2½ tsp Chinese five-spice powder
½ tsp freshly grated nutmeg
2 teaspoons smoked sea salt flakes, or to taste
175ml/6fl oz sunflower oil, plus extra for greasing
300²µ/10½´Ç³ú black treacle (use an oiled 1-cup measure for ease)
75g/2½oz unsalted butter
125ml/4fl oz double cream
3 large free-range eggs
250ml/9fl oz cider, preferably dry or at least not sweet