"If you come from Dublin, you make this with Guinness; if you come from Cork, you make this with Murphy's. Either way, the beer gives it an interesting and quite different flavour. We serve it in the supporters' club on match days in big, thick slices, as it has tons of man appeal...."
INGREDIENTS
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2 oz (50 g) cocoa powder
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7 fl oz (200 ml) stout
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4 oz (110 g) very soft butter
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10 oz (275 g) dark soft brown sugar
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2 large eggs, beaten
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6 oz (175 g) plain flour
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¼ teaspoon baking powder
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1 teaspoon bicarbonate of soda
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4 oz (110 g) icing sugar, sifted
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2 oz (50 g) very soft butter
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2 tablespoons stout
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4 oz (110 g) dark chocolate (50-55% cocoa solids)
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1 oz (25 g) walnut pieces, finely chopped
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8 walnut halves
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cocoa powder, for dusting