1 large orange, grated zest only
250g/9oz good-quality ready-made mincemeat
175g/6oz plain flour
100g/3Β½oz ready-to-eat dried apricots, finely chopped (do this in a food processor if you're short on time)
25g/1oz icing sugar, plus extra for dusting
125g/4oz uncoloured marzipan, grated
75g/2Β½oz cold butter, cubed
1 free-range egg, beaten