INGREDIENTS
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3 cups packed (21 ounces/595 grams), light brown sugar
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12 tablespoons, unsalted butter, cut into 12 pieces
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2/3 cup, evaporated milk
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1/2 teaspoon, salt
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12 ounces (340 grams), bittersweet chocolate, chopped
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5 ounces (142 grams) large, marshmallows (about 3 cups)
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1 1/2 cups, walnuts, toasted and chopped coarse (optional)