INGREDIENTS
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1/4 cup mayonnaise
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1/4 cup finely chopped celery
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2 tablespoons minced shallots
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4 teaspoons chopped fresh tarragon
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1 tablespoon capers, rinsed
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2 teaspoons grated lemon peel
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1/8 teaspoon pepper
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1 (12-oz.) can water-packed tuna, well-drained
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12 small cocktail buns (3 inches), split
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3 Boston lettuce leaves, each cut into 4 pieces
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2 small tomatoes, each cut into 6 slices