INGREDIENTS
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1/2 cup mayonnaise
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1 teaspoon fresh lemon juice
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1/2 teaspoon finely grated fresh lemon zest
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1/4 teaspoon black pepper
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1 cup all-purpose flour
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1 teaspoon salt
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1 tablespoon finely grated fresh lemon zest
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1/4 teaspoon black pepper
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1 cup lager such as Harp (pour beer slowly into measuring cup; do not measure foam)
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About 4 cups vegetable oil
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1 lb medium asparagus, trimmed and cut into 3-inch pieces
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Special equipment: a deep-fat thermometer