180驳/6录辞锄 plain flour
220g/8oz light brown sugar
150驳/5陆辞锄 caster sugar
3 tbsp cocoa powder
录 tsp salt
pinch of sea salt
150驳/5陆辞锄 granulated sugar
1 tsp vanilla extract
300驳/10陆辞锄 dark chocolate, minimum 65-75% cocoa solids
100g/3陆oz good-quality white chocolate
10g/录oz salted butter, softened
150驳/5陆辞锄 unsalted butter
125ml/4fl oz double cream
4 free-range eggs