INGREDIENTS
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170g (1 cup) Chilean flame raisins (Sunbeam brand)
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125ml (1/2 cup) dark rum
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Melted butter, to grease
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125g butter, chopped
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300g good-quality dark chocolate, finely chopped
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155g (3/4 cup, firmly packed) brown sugar
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2 eggs, lightly whisked
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225g (1 1/2 cups) plain flour
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100g (1 cup) walnuts halves, coarsely chopped
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65g (1/4 cup) sour cream