Spicy Warm Shrimp Cocktail

Serves:

• 16 cups water
• 1/2 cup dry white wine
• 1 onion cut into eighths
• 2 carrots peeled and cut into 2-inch pieces
• 2 celery stalks cut into 2-inch pieces
• 1 lemon halved
• 1 bay leaf
• 1/2 tsp whole black peppercorns
• 1 1/2 pounds uncooked large shrimp (with shells intact)
• 1/4 cup crème fraîche
• 1/4 cup mayonnaise
• 3 Tbsp prepared horseradish
• 2 Tbsp ketchup
• 2 1/2 Tbsp finely chopped fresh chives divided
• 1 1/2 Tbsp fresh lemon juice
• Salt and freshly ground black pepper
• 1/4 head of iceberg lettuce very thinly sliced
• Lemon wedges for garnish