INGREDIENTS
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1/2 cup mayonnaise
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1/4 cup buttermilk
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1/4 cup grated Parmesan cheese
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1 medium clove garlic, minced
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1 teaspoon chopped fresh parsley
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1 teaspoon lemon juice
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1/4 teaspoon black pepper
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1 teaspoon minced fresh tarragon
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anchovy paste (optional)