INGREDIENTS
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LEMON CURD
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1/4 cup (60ml) fresh lemon juice (about 1-2 lemons)
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2 tsp finely grated lemon zest
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1/3 cup (69g) sugar
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4 egg yolks
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3 tbsp (42g) salted butter
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LEMON CAKE LAYERS
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3/4 cup (168g) unsalted butter, room temperature
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1 1/2 cups (310g) granulated sugar
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3/4 cup (173g) sour cream
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1 tsp vanilla extract
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1 1/2 tbsp finely grated lemon zest
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6 egg whites
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2 1/2 cups (325g) all purpose flour
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4 tsp baking powder
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1/2 tsp salt
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1/2 cup (120ml) milk
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2 tbsp (30ml) water
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6 tbsp (90ml) fresh lemon juice
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WHIPPED MASCARPONE FROSTING
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2 1/2 cups (720ml) heavy whipping cream, cold
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1 1/2 cups (173g) powdered sugar
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2 tsp vanilla extract
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16 oz (452g) mascarpone cheese, chilled*