"This torte is a masterful mix of textures: The top crust bakes up with a hint of crackly crunch, giving way to a moist, light interior studded with tiny bits of hazelnut...."
INGREDIENTS
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1 stick (1/2 cup) unsalted butter plus additional for greasing pan
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1 cup hazelnuts (5 oz)
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6 oz fine-quality bittersweet chocolate (not unsweetened; not more than 60% cacao)
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2 tablespoons potato starch
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1/4 teaspoon salt
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1/2 cup sugar
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4 large eggs, separated, at room temperature for 30 minutes
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1 teaspoon vanilla
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Garnish: Passover confectioners sugar