INGREDIENTS
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Cake:
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225g (scant 2 cups) plain flour
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350g (1 + 3/4 cups) caster (superfine) sugar
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85g (2/3 cup + 1 tsp) cocoa powder
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1 1/2 tsp baking powder
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1 1/2 tsp bicarbonate of soda (baking soda)
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2 eggs
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250ml (1 cup + 2tsp) buttermilk
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125ml (1/2 cup + 1tsp)vegetable or sunflower oil
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2 tsp vanilla extract
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250ml (1 cup + 2tsp) very hot coffee or boiling water
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Salted Caramel:
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300g (1 1/2 cups) caster (superfine) sugar
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60ml (1/4 cup) water
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280ml (1 cup + 3tbsp) double cream
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30g (2 tbsp) unsalted butter
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1/2 tsp – 1 tbsp sea salt flakes
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Swiss Meringue Buttercream:
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200g (1 cup) caster (superfine) sugar
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4 egg whites
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250g (1 cup + 1 tbsp) softened unsalted butter
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1 tsp vanilla extract
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6 tbsp (or more to taste) salted caramel
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Whipped Ganache:
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200g (7 oz) dark chocolate
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200ml (3/4 cup + 1tbsp + 1tsp) double cream