Frothy Lettuce Soup with Onion Custard

4
Servings

Ingredients

  • Salt
  • Four 6-ounce heads of Boston lettuce, trimmed, 2 medium lettuce leaves reserved
  • 2 Ounce lean slab bacon, sliced 1/4 inch thick and cut into 1/4-inch dice (1/3 cup)
  • 5 Tablespoon cold unsalted butter
  • One 1/2-pound white onion, thinly sliced
  • 1 1/4 Cup chicken stock or low-sodium broth
  • 1 large egg
  • 1/2 Cup milk
  • Freshly ground pepper
  • Pinch of freshly grated nutmeg
  • 3 Tablespoon crème fraîche