INGREDIENTS
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12 ounces campanelle (trumpet-shaped pasta) or macaroni
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1/8 teaspoon crushed saffron threads
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7 tablespoons fresh lemon juice, divided
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6 tablespoons extra-virgin olive oil, divided
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1/2 cup mayonnaise
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1/2 cup sour cream
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1/4 cup thinly sliced green onions
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2 tablespoons drained capers
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2 tablespoons minced fresh tarragon plus sprigs for garnish
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1 tablespoon minced fresh dill plus sprigs for garnish
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1 teaspoon sugar
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1 pound cooked medium shrimp
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1 cup finely chopped celery
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1/2 pound Dungeness crabmeat
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2 large handfuls of arugula
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2 small heads of butter lettuce
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Lemon wedges