INGREDIENTS
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1/2 cup plus 2 tablespoons Irish whiskey
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6 ounces bittersweet (70% cocoa) chocolate (such as Scharffen Berger or Lindt), chopped
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2 teaspoons instant espresso powder dissolved in 6 tablespoons hot water
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1/3 cup blanched almonds (about 2 ounces), lightly toasted
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6 tablespoons all purpose flour, divided
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3/4 cup (1 1/2 sticks) unsalted butter, room temperature, divided
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7 tablespoons vanilla sugar , divided
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3 large eggs, separated
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Pinch of fine sea salt
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2 ounces semisweet chocolate, chopped