275g/10oz soft light-brown sugar
50g/2oz chopped roasted hazelnuts, to decorate
100驳/3陆辞锄 icing sugar
100驳/3陆辞锄 milk chocolate, broken into pieces
175g/6oz self-raising flour
75g/2陆oz good-quality dark chocolate (minimum 70% cocoa solids), broken into pieces
100驳/3陆辞锄 unsalted butter, softened, plus extra for greasing
50g/2oz unsalted butter
2 free-range eggs, lightly beaten
2 tbsp stout
150ml/5fl oz stout