4 tbsp apricot jam
1 tsp baking powder
225g/8oz caster sugar, plus extra for sprinkling
50驳/1戮辞锄 cocoa powder
220驳/7戮辞锄 self-raising flour
225g/8oz unsalted butter, softened, plus extra for greasing
4 free-range eggs
300ml/10陆fl oz whipping cream, softly whipped