Asparagus and Green Beans with Tarragon Lemon Dip

INGREDIENTS

• Few grinds freshly ground black pepper
• 1 cup mayonnaise
• 2 tablespoons chopped fresh tarragon, (4 sprigs), chopped, plus sprigs for garnish
• 1 pound fresh green beans, trimmed
• 1 small shallot, finely chopped
• 1 lemon, zested and juiced
• 1 pound asparagus, trimmed
• 2 tablespoons chopped parsley leaves, plus sprigs for garnish
• Salt