"The beer – dark stout (Guinness, Murphy’s or similar) – gives this cake an extra dimension, and the icing is so good it can be used on other chocolate cakes...."
INGREDIENTS
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175g self-raising flour
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¼ level teaspoon baking powder
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1 level teaspoon bicarbonate of soda
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275g dark brown soft sugar
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110g spreadable butter
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2 large eggs, beaten
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50g cocoa powder, sifted
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200ml sweet stout
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110g dark chocolate (minimum 70% cocoa solids), broken up
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2 tablespoons sweet stout
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50g spreadable butter
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110g icing sugar, sifted
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25g walnut pieces, finely chopped
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8 walnut halves