100²µ/3½´Ç³ú maraschino cherries, drained and quartered
1 orange, zest only, grated, plus extra for decorating
250g/9oz plain flour
½ tsp baking powder
½ tsp bicarbonate of soda
110²µ/3¾´Ç³ú light brown sugar
110²µ/3¾´Ç³ú caster sugar
80g/3oz crystallised ginger, finely chopped, plus extra for decorating
30g/1oz flaked almonds
80g/3oz marzipan, chopped into small chunks
100²µ/3½´Ç³ú pistachio nuts, chopped
½ tsp sea salt flakes, plus extra for sprinkling
½ tsp vanilla extract
150²µ/5½´Ç³ú dark chocolate, chopped
175g/6oz white chocolate, chopped
110²µ/3¾´Ç³ú unsalted butter, diced and at room temperature
1 large free-range egg