INGREDIENTS
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Neutral oil, such as safflower, for the pan
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1 cup heavy cream
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4 tablespoons unsalted butter, cut into pieces
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14 ounces bittersweet chocolate, chopped, divided
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1 cup sugar
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1/2 cup light corn syrup
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1/4 cup water
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1/2 teaspoon kosher salt
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Flaky sea salt, for sprinkling (optional)