INGREDIENTS
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1⅕ cup blackberries
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⅕ cup sugar
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2 tbs water
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250 g/ 1 cup butter, softened and unsalted
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250 g/1 1/3 cup caster sugar
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4 eggs, large
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1 tsp vanilla bean paste or extract
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250 g/1 3/4 cup flour
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2 1/2 tsp baking powder
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1/2 tsp baking soda
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1/2 tsp salt
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zest of 1 lemon
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250 ml/ 1 cup mascarpone, chilled
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1/4 cup icing sugar
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175 ml/ 3/4 cup double cream
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1 tsp vanilla bean paste