150g/5oz plain flour
陆 tsp bicarbonate of soda
500g/1lb 2oz caster sugar
80g/3oz cocoa powder
50g/2oz icing sugar
150g/5oz self-raising flour
2 tbsp sunflower oil
100驳/3陆辞锄 chocolate (at least 70% cocoa solids)
250g/9oz dark chocolate (at least 70% cocoa solids)
250g/9oz unsalted butter
50g/2oz unsalted butter
6 tbsp double cream
4 free-range eggs
125ml/4fl oz milk
1 tbsp good-quality instant coffee