INGREDIENTS
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For the filling
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1-1/3 cups heavy cream
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4 oz. high-quality white chocolate, such as Green and Black or Lindt, finely chopped (about 1 cup)
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For the cake
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Unsalted butter, softened, for the pan
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10 Tbs. unsweetened cocoa
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3 oz. bittersweet chocolate (60% to 70% cacao), finely chopped (about 3/4 cup)
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2 Tbs. brewed coffee
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9 large eggs, separated, whites at room temperature
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1 cup granulated sugar
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1/4 tsp. kosher salt
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To finish
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3/4 cup heavy cream
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1 Tbs. light corn syrup
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6 oz. bittersweet chocolate (60% to 70% cacao)
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1 oz. (2 Tbs.) unsalted butter, cut into 4 pieces
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3 oz. high-quality white chocolate, such as Green and Black or Lindt, shaved (optional)