INGREDIENTS
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½ cup chopped country ham
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¼ cup butter
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4 large eggs
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1 teaspoon ground mustard
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½ cup all-purpose flour
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¼ cup whole milk
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¼ cup heavy whipping cream
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¼ teaspoon kosher salt
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¼ teaspoon ground black pepper
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½ cup shredded Gruyère cheese
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1 tablespoon chopped fresh chives
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½ teaspoon chopped fresh tarragon