Chopped Salad

INGREDIENTS

• 2 tablespoons salt
• 10 oz frozen black-eyed peas (not thawed)
• 1/2 teaspoon cayenne
• 1 tablespoon coarse-grain mustard
• 3 tablespoons cider vinegar
• 1 lb frozen shelled (not thawed)
• 2 3/4 cups fresh corn (from about 4 ears)
• 1 medium fennel bulb (sometimes labeled "anise"), stalks discarded
• 1/2 cup finely chopped scallions (about 4)
• 2 tablespoons fresh lemon juice
• 1/3 cup extra-virgin olive oil
• 1 lb zucchini, trimmed
• 2 tablespoons finely chopped fresh dill
• 1/2 teaspoon black pepper