300g/10陆oz frozen pitted cherries
1 tbsp fresh lemon juice
25g/1oz soft light brown sugar
75驳/2戮辞锄 caster sugar
1 tbsp icing sugar
陆 tsp vanilla extract
50g/1戮oz plain dark chocolate, finely grated
3 digestive biscuits
2 large free-range eggs
125ml4fl oz full-fat milk