Lettuce Soup

Ingredients

• 1/4 teaspoon pepper
• chive blossoms for garnishing
• 2 tablespoons olive oil
• 1 cup sliced onion
• 1 teaspoon chopped garlic
• 1 tablespoon chopped parsley leaves, plus more for garnishing
• 1 tablespoon chopped chives, plus more for garnishing
• 2 teaspoons chopped tarragon leaves, plus more for garnishing
• 2 heads Boston lettuce, leaves torn
• 3 cups chicken stock
• 1/2 cup heavy cream or evaporated milk
• 1/2 teaspoon salt