INGREDIENTS
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1 (17.3 oz.) box frozen puff pastry, 2 sheets, thawed
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1 pound asparagus
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1 bay leaf
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1 egg, lightly beaten
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3/4 cup Parmesan cheese, grated
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3/4 cup balsamic vinegar
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1 tablespoon sugar
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1 tablespoon sea salt
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1 small bowl water
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Hollandaise:
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4 egg yolks
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3/4 cup (1 1/2) sticks unsalted butter
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2 tablespoons freshly squeezed lemon juice
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1 pinch cayenne pepper
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salt, to taste