600g/1lb 5oz pitted frozen dark cherries
225g/8oz plain flour, plus extra for dusting
1 tbsp cornflour (or 1 tbsp arrowroot)
45驳/1戮辞锄 caster sugar
1 tsp caster sugar
2 tbsp icing sugar
pinch salt
15驳/陆辞锄 butter
120g/4录oz fridge-cold butter, cut into 1cm/陆in cubes
1 free-range egg, beaten with 2 tsp very cold water
1 free-range egg, beaten
cream, ice cream or custard, to serve