"Tiramisu Cake - four layers of moist and soft sponge cake, soaked in espresso and Marsala wine, filled with Mascarpone frosting...."
INGREDIENTS
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5 eggs (, separated)
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1 cup (200g) sugar (, divided)
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1 tsp (5g) vanilla extract
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1/2 cup (115g) oil
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1/2 cup (120ml) sparkling water
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2 cups (250g) flour
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2 ¼ tsp (10g) baking powder
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1/4 tsp (1g) salt
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1 cup (240 ml) espresso coffee (, at room temperature)
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2 tbsp (30ml) Marsala wine
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1 ½ pounds (750g) Mascarpone cheese (, room temperature)
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2 cups (480g) whipping cream (, chilled)
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1 cup (120g) powdered sugar
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2 tsp (10g) vanilla extract
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2.5 oz (70g) white chocolate
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1 oz (30g) white chocolate (, for tempering)
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instant coffee powder (, for dusting)
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Cocoa powder for dusting the cake